Porsche 963 Explained

Porsche 963
Category:LMDh
Constructor:Porsche (Multimatic)
Designer:Grant Larson (Director of Special Projects, Style Porsche)[1]
Stéphane Lenglin (Exterior Designer)[2]
Christian Eifrig (Technical Project Manager)[3]
Stefan Moser (Head Engineer, Powertrain)
Predecessor:Porsche 919 Hybrid (LMP1)
Porsche RS Spyder (LMP2)
Technical Ref:[4]
Chassis:LMP2-based[5] carbon-fibre monocoque with aluminium honeycomb core
Front Suspension:Double wishbones, pushrods with power steering
Rear Suspension:Double wishbones, pushrods
Length:51001NaN1
Width:20001NaN1
Height:10601NaN1
Wheelbase:31481NaN1
Engine Name:Porsche 9RD
Capacity:45931NaN1
Configuration:90° V8
Turbo/Na:twin-turbocharged, 32-valve, DOHC
Electric Motor:Rear-mounted spec MGU supplied by Bosch
Engine Position:mid-engine, longitudinally-mounted
Gearbox Name:Xtrac P1359
Gears:7-speed
Transmission Type:sequential manual[6]
Weight:10301NaN1
Fuel:TotalEnergies (WEC)
VP Racing Fuels (IMSA)
Lubricants:Mobil 1 (Porsche Penske Motorsports & JOTA)
Motul (JDC–Miller MotorSports & Proton Competition)
Brakes:AP Racing carbon 380/365mm with AP Monobloc 6-piston calipers
Tyres:Michelin slicks with BBS one-piece forged alloys, 29/71-18 front and 34/71-18 rear
Competition:FIA World Endurance Championship, IMSA SportsCar Championship
Debut:2023 24 Hours of Daytona
First Win:2023 Grand Prix of Long Beach
Last Win:2024 Motul Course de Monterey
Last Event:2024 24 Hours of Le Mans
Races:25
Wins:7
Podiums:14
Poles:5
Fastest Laps:2
Teams Champ:1 (2023 FIA WEC (FIA World Cup for Hypercar Teams))

The Porsche 963 (Type 9R0) is an LMDh sports prototype racing car designed by Porsche and built by Multimatic, to compete in the Hypercar and GTP (Grand Touring Prototype) classes in the FIA World Endurance Championship and IMSA SportsCar Championship, respectively.[7] The 963 name draws inspiration from the Porsche 956 and Porsche 962 that raced in the 1980s, which also competed in American and European racing series.[8] The car was revealed at the 2022 Goodwood Festival of Speed, with a traditional red, white, and black livery.[9]

The official race debut of the 963 was at the 2023 24 Hours of Daytona, the season-opening round of the 2023 IMSA SportsCar Championship. The car was originally slated for a non-competitive dress rehearsal at the 2022 8 Hours of Bahrain,[10] however, Porsche decided later that they would not race at Bahrain in favour of more private testing time.[11] Porsche later announced that the first customer 963s would not be delivered until April 2023 due to delays caused by supply chain disruptions, forcing customer teams to miss the opening races of the IMSA SportsCar Championship and WEC, something that the teams understood when engaging in talks with Porsche to take delivery.[12]

Background

Porsche last competed in the FIA World Endurance Championship's top class, LMP1, back in 2017 with the Porsche 919 Hybrid, and in the IMSA SportsCar Championship with the Porsche RS Spyder in the LMP2 class, with the 919 taking outright championship victory in its final year of competition, and the RS Spyder taking outright championship victory in the American Le Mans Series and class championship victory in the European Le Mans Series.[13] [14] Following the withdrawal of Porsche's factory LMP1 and LMP2 teams from the World Endurance Championship and American Le Mans Series, Porsche maintained a presence in the lower classes with continued factory support for the 911 RSR in the American Le Mans Series' GT2 (later GTLM) class, and in the World Endurance Championship's GTE class.[15] [16] The Automobile Club de l'Ouest, the organiser of the 24 Hours of Le Mans, issued a statement regarding the matter, saying that the club "regrets this precipitous departure, as it does the abruptness of the decision from one of endurance racing’s most successful and lauded manufacturers".[17]

As part of the LMDh regulations, interested parties can choose four constructors to partner with to construct the chassis upon to which design the car, those four constructors being Oreca, Ligier, Multimatic and Dallara.[18] Head of Porsche Motorsport Pascal Zurlinden announced in March 2020 that Porsche would be evaluating an entry into LMDh, saying "Porsche is seriously looking into it, but there is no decision yet".[19] This was followed up with an announcement in December that year that development of a LMDh project would commence, with Porsche being the first manufacturer to commit to the LMDh class.[20]

A multi-year partnership with Team Penske to run the factory team under the banner of Porsche Penske Motorsport was announced in May 2021. The announcement marked the commencement of third major collaboration with between Porsche and Team Penske, continuing a decades old relationship that began with the Porsche 917/30 in Can-Am and blossomed again with the Porsche RS Spyder in LMP2 class of the ALMS. The collaboration would be aiming to debut with two entries each in the top classes of the 2023 FIA World Endurance Championship and 2023 IMSA SportsCar Championship.[21]

Vice President of Porsche Motorsport Fritz Enzinger commented that "Porsche and Penske shared a proven track record of success" and that "In the long list of victories to date, however, the name Le Mans has been missing. I hope that we will finally be able to chalk up this success as of 2023 with Porsche Penske Motorsport. This would then mark Porsche's 20th overall victory at the Sarthe - a dream come true."

In the same month, Multimatic was revealed to be the constructor that would supply the chassis for which Porsche would design bodywork, with Enzinger saying that "Multimatic is the most obvious and logical solution for us", and that "We have known this highly respected company and its team of experienced professionals for many years and are absolutely convinced of the quality of their work".[22]

Testing commenced at the beginning of 2022, with the first tests being at Porsche's test track at Weissach,[23] where the car's engine choice was also revealed, that being a twin-turbocharged V8, which is a development of the engine found in the Porsche 918 which in turn was developed from the V8 found in the Porsche RS Spyder, paired with the standardised hybrid parts provided by Williams Advanced Engineering, Bosch and Xtrac.[24] [25] This was followed by an extensive testing program at the Circuit de Barcelona-Catalunya and the Circuit de Spa-Francorchamps, where the car covered over .[26] [27] [28]

Porsche also announced in May 2022 that four 963s would be allocated to customers for 2023, at the cost of $2.9 million, with full factory support.[29] [30] JDC–Miller Motorsports and JOTA Sport both announced on the 25th of June that they would take delivery, with JDC MotorSport campaigning the 963 in the IMSA SportsCar Championship and JOTA fielding the car in the FIA World Endurance Championship. In November 2022, Proton Competition was revealed as operator of the remaining 2 customer entries, fielding a single entry in the 2023 editions of both WEC and IMSA.[31] [32] [33]

Racing history

Due to supply-chain constraints, Team Penske (the official factory-backed Porsche team) was the only team who could field the 963 at its debut at the 2023 24 Hours of Daytona.[34] Customer teams JDC-Miller MotorSports and Proton Competition instead opted to run a Duqueine D-08 and Oreca 07, respectively.[35] [36]

The 963 made its first appearance in the practice sessions of the 2023 24 Hours of Daytona alongside fellow GTP debutants, the BMW M Hybrid V8, the Acura ARX-06, and the Cadillac V-LMDh. The 963 was often right behind the ARX-06s of Meyer Shank Racing and Wayne Taylor Racing, with the former leading all five practice sessions, bar the last one.[37] [38] A technical problem limited the mileage of the No. 6 963 to just nine laps in second practice, however, still managed to clock a time faster than the No. 31 Cadillac.[39] Nick Tandy set the fastest time in a damp fifth free practice that saw intermittent rain, albeit that none of the ARX-06s left their garages during the session.[40] Tom Blomqvist took pole in what was a chaotic qualifying session: John Farano crashed at turn 7 in his Oreca 07, red flagging the session, and later another red flag was brought out for Tandy, who crashed his 963. Given just a single flying lap after the session resumed after Tandy's accident, Blomqvist took pole with a 1:34.031, 0.083 s faster than Felipe Nasr in the No. 7 963.[41] Blomqvist carried his pace into the race, leading the first 62 and last 97 laps.[42] Both Porsches were beset by reliability issues, with significant time spent in the garages: No. 7 was the first to come in, losing 35 laps to replace a faulty battery,[43] and Tandy – in No. 6 – had been running in contention for overall victory in the morning until a gearbox failure ended his race.[44]

The Porsche 963 took its first victory in IMSA competition on the Streets of Long Beach with Mathieu Jaminet and Nick Tandy driving.[45] In the season's fourth round, the Motul Course de Monterey, Matt Campbell took the car's first pole position while Tandy's No. 6 started second and van der Helm's No. 5 JDC–Miller Motorsports car qualified ninth.[46] The No. 6 car recovered to second after a slow start. Campbell hit the No. 94 Andretti Autosport Aston Martin Vantage AMR GT3, losing time as he served a drive-through penalty. A crash at turn 10 after Nasr relieved Campbell relegated the No. 7 car to ninth. Tijmen van der Helm and Mike Rockenfeller finished seventh in JDC–Miller Motorsports first race with the car.[47] [48] [49] At Watkins Glen, Tandy and Jaminet started from pole position after qualifying was cancelled.[50] Porsche Penske Motorsport's No. 6 car battled for the win. Through a better pit-stop strategy, the No. 6 Porsche overtook the No. 31 Cadillac and the No. 60 Acura and rejoined in second with 40 minutes remaining.[51] [52] Jaminet overtook Connor De Phillippi in the final minutes before the race ended behind the safety car.[53] The No. 7 car was in contention until Nasr sustained an issue with the hybrid system and spent 2 hours replacing the battery, gearbox and rear axle.[54] It later emerged onto the track and finished 52nd overall. Later, the No. 6 Porsche was disqualified for illegal skid block wear.[55]

In 2024, the Porsche 963 took its first major endurance race victory with a win in the 24 Hours of Daytona, with Porsche Penske Motorsport winning with drivers Dane Cameron, Matt Campbell, Felipe Nasr, and Josef Newgarden.[56] In the 2024 Qatar 1812 km, the opening round of the 2024 FIA World Endurance Championship, Porsche 963s swept the podium positions, with the Porsche Penske Motorsport cars taking 1st and 3rd and a JOTA entered car taking 2nd.[57]

Racing results

Complete IMSA SportsCar Championship results

(key) Races in bold indicates pole position. Races in italics indicates fastest lap.

YearEntrantsClassDrivers123456789
2023Porsche Penske MotorsportGTPDAYSEBLBHLAGWGLMOSELKIMSPET26914th
Mathieu Jaminet6312957110
Nick Tandy312957110
Dane Cameron3
Laurens Vanthoor10
Matt Campbell75397612426915th
Felipe Nasr53976124
Michael Christensen5
Josef Newgarden4
JDC-Miller MotorSports Mike Rockenfeller574458516609th
Tijmen van der Helm744585
Jenson Button5
Proton Competition Gianmaria Bruni5989381415th
Harry Tincknell893
Neel Jani3
2024Proton CompetitionGTPDAYSEBLBHLGADETWGLELKIMSATL12709th*
Gianmaria Bruni5585109
Alessio Picariello58
Romain Dumas5
Neel Jani5
Julien Andlauer8
Mike Rockenfeller5
Bent Viscaal109
Porsche Penske Motorsport Mathieu Jaminet64941215863rd*
Nick Tandy49412
Kévin Estre4
Laurens Vanthoor4
Frédéric Makowiecki9
Dane Cameron71333416691st*
Felipe Nasr13334
Matt Campbell13
Josef Newgarden1
JDC-Miller MotorSports Richard Westbrook85611788126510th*
Tijmen van der Helm611788
Philip Hanson611
Ben Keating6
Sources:[58]
* Season still in progress.

Complete IMSA Michelin Endurance Cup results

(key) Races in bold indicates pole position. Races in italics indicates fastest lap.

YearEntrantsClassDrivers12345
2023Porsche Penske MotorsportGTPDAYSEBWGLPET276th
Mathieu Jaminet63910
Nick Tandy3910
Dane Cameron3
Laurens Vanthoor10
Matt Campbell7574304th
Felipe Nasr574
Michael Christensen5
Josef Newgarden4
JDC-Miller MotorSports Mike Rockenfeller545109th
Tijmen van der Helm45
Jenson Button5
Proton Competition Gianmaria Bruni593711th
Harry Tincknell3
Neel Jani3
2024Proton CompetitionGTPDAYSEBWGLIMSATL87th*
Gianmaria Bruni558
Alessio Picariello58
Romain Dumas5
Neel Jani5
Julien Andlauer8
Porsche Penske Motorsport Mathieu Jaminet649404th*
Nick Tandy49
Kévin Estre4
Laurens Vanthoor4
Frédéric Makowiecki9
Dane Cameron713741st*
Felipe Nasr13
Matt Campbell13
Josef Newgarden1
JDC-Miller MotorSports Richard Westbrook85611810th*
Tijmen van der Helm611
Philip Hanson611
Ben Keating611
Source:[59]
* Season still in progress.

Complete World Endurance Championship results

(key) Races in bold indicates pole position. Races in italics indicates fastest lap.

YearEntrantsClassDrivers12345678Points
2023Porsche Penske MotorsportSEBPORSPALMNMONFUJBHR993rd
Dane Cameron5510494127
Michael Christensen510494127
Frédéric Makowiecki510494127
Kévin Estre663 Ret11735
André Lotterer63 Ret11735
Laurens Vanthoor63 Ret11735
Mathieu Jaminet75Ret
Felipe NasrRet
Nick TandyRet
Hertz Team Jota António Félix da Costa38613964
Will Stevens613964
Yifei Ye613964
Proton Competition Gianmaria Bruni99Ret910
Harry TincknellRet910
Neel JaniRet910
2024Porsche Penske MotorsportHypercarQATIMOSPALMNSAPCOAFUJ1081st*
Matt Campbell533Ret6
Michael Christensen33Ret6
Frédéric Makowiecki33Ret6
Kévin Estre61224
André Lotterer1224
Laurens Vanthoor1224
Mathieu Jaminet4Ret
Felipe NasrRet
Nick TandyRet
Hertz Team Jota Callum Ilott1221418
Will Stevens21418
Norman Nato2148
Jenson Button3811Ret9
Philip Hanson11Ret9
Oliver Rasmussen11Ret9
Proton Competition Julien Andlauer9910514
Neel Jani10514
Harry Tincknell1014
Source:[60]

* Season still in progress.

Notes and References

  1. Web site: Porsche 963 - Petersen Automotive Museum. 18 July 2023. Petersen Automotive Museum. 18 July 2023. https://web.archive.org/web/20230718130652/https://www.petersen.org/porsche-963. live.
  2. Web site: Speed meets style: the design of the Porsche 963. 18 July 2023. Porsche. 6 June 2023. 18 July 2023. https://web.archive.org/web/20230718122836/https://newsroom.porsche.com/en/2023/motorsports/porsche-963-designer-stephane-lenglin-interview-32616.html. live.
  3. Web site: The technology of the new Porsche 963 hypercar/GTP prototype in detail. 26 January 2023. Porsche. 25 January 2023. 18 July 2023. https://web.archive.org/web/20230718162921/https://newsroom.porsche.com/en_US/2023/motorsport/porsche-hypercar-gtp-prototype-963-technology-31050.html. live.
  4. Web site: Clear the stage: The Porsche 963. Porsche Motorsport. 27 June 2022. 18 July 2023. https://web.archive.org/web/20230718163928/https://motorsports.porsche.com/international/en/category/cars/lmdh-prototype-963. live.
  5. Web site: Inside the spec hybrid spine of LMDh cars. James. Newbold. 18 December 2022. 8 August 2023. Motorsport.com. 7 August 2023. https://web.archive.org/web/20230807192351/https://www.motorsport.com/imsa/news/inside-the-spec-hybrid-spine-of-lmdh-cars/10412551/. live.
  6. Web site: Entry List 2023. 24 Hours of Le Mans. fr. July 3, 2023. 11 June 2023. https://web.archive.org/web/20230611134808/https://assets.lemans.org/explorer/pdf/courses/2023/24-heures-du-mans/infos-course/liste-engages-24h-infos-course.pdf. live.
  7. Web site: Porsche 963 LMDh Prototype Debuts At Goodwood, Will Race In 2023. 26 June 2022. Christopher. Smith. motor1. 24 June 2022. 21 July 2023. https://web.archive.org/web/20230721213843/https://www.motor1.com/news/594051/porsche-963-prototype-debuts-goodwood-race-2023/. live.
  8. Web site: New Porsche 963 Is A 670 HP GTP Hypercar That Will Race At Daytona And Le Mans. Sebastien. Bell. 24 June 2022. 26 June 2022. carscoops.com. 14 July 2022. https://web.archive.org/web/20220714092816/https://www.carscoops.com/2022/06/porsche-unveils-the-670-hp-963-hypercar-that-will-compete-at-daytona-and-le-mans/. live.
  9. 2023 Porsche 963 LMDh car revealed in full at Goodwood. Online. James. Taylor. Car. 26 June 2022. 24 June 2022. 18 July 2023. https://web.archive.org/web/20230718180053/https://www.carmagazine.co.uk/car-news/first-official-pictures/porsche/963/. live.
  10. Web site: Porsche Penske Motorsport Presents 963: Bahrain beckons . 1 July 2022 . . 20 November 2022 . https://web.archive.org/web/20221120074141/https://www.fiawec.com/en/news/porsche-penske-motorsport-presents-963-bahrain-beckons/7381 . live .
  11. Web site: Porsche decides against early LMDh debut in Bahrain WEC. motorsport.com. Rachit. Thurkal. 7 September 2022. 27 September 2022. 1 October 2022. https://web.archive.org/web/20221001100242/https://www.motorsport.com/wec/news/porsche-decides-against-early-lmdh-debut-in-bahrain-wec/10364996/. live.
  12. News: Porsche confirms 963 customer team delay in 2023 WEC and IMSA. Charles. Bradley. 8 December 2022. 10 December 2022. motorsport.com. 9 December 2022. https://web.archive.org/web/20221209205858/https://www.motorsport.com/wec/news/porsche-confirms-963-customer-team-delay-2023-wec-imsa/10408964/. live.
  13. Web site: Porsche secures third straight world championship title with the 919 Hybrid. Porsche Newsroom. 5 November 2017. 29 June 2022. 18 July 2023. https://web.archive.org/web/20230718163723/https://newsroom.porsche.com/en/motorsports/porsche-motorsport-fia-wec-2017-world-championship-lmp1-919-hybrid-third-title-14451.html. live.
  14. Web site: IMSA: Top 10 cars of all-time. Jacob. LeBlanc. 3 January 2019. 29 June 2022. beyondtheflag.com. 18 July 2023. https://web.archive.org/web/20230718162729/https://beyondtheflag.com/2019/03/01/imsa-top-10-cars-all-time/3/. live.
  15. Web site: Porsche following Audi, pulls factory team out of ALMS. Drew. Phillips. 15 December 2008. 29 June 2022. autoblog. 18 July 2023. https://web.archive.org/web/20230718165046/https://www.autoblog.com/2008/12/15/porsche-following-audi-pulls-factory-team-out-of-alms/. live.
  16. Web site: Leslie . Jack . 28 July 2017 . Porsche Announces Shock LMP1 Exit In Favour Of Formula E . 29 June 2022 . Car Throttle . 18 July 2023 . https://web.archive.org/web/20230718162720/https://www.carthrottle.com/post/porsche-announces-shock-lmp1-exit-in-favour-of-formula-e/ . live .
  17. Web site: WEC 'regrets' Porsche's LMP1 exit, working on plan for 2018 season. Luke. Smith. 29 June 2022. 28 July 2017. NBC Sports. 8 February 2023. https://web.archive.org/web/20230208205210/https://motorsports.nbcsports.com/2017/07/28/wec-regrets-porsches-lmp1-exit-working-on-plan-for-2018-season/. live.
  18. What is LMDh? BMW to join Hybrid Le Mans racing series in 2023. Online. Car. 11 June 2021. Cameron. Kirby. 27 June 2022. 3 October 2023. https://web.archive.org/web/20231003125440/https://www.carmagazine.co.uk/hybrid/what-is-lmdh/. live.
  19. Web site: Porsche will formally evaluate WEC/IMSA LMDh entry. motorsport.com. Gary. Watkins. 30 March 2020. 27 June 2022. 20 December 2022. https://web.archive.org/web/20221220090519/https://www.motorsport.com/wec/news/porsche-evaluate-lmdh-entry-imsa/4774863/. live.
  20. Web site: Porsche announces development of LMDh prototype to compete at Daytona, Le Mans. NBC Sports. 15 December 2020. Nate. Ryan. 27 June 2022. 4 June 2023. https://web.archive.org/web/20230604182444/https://motorsports.nbcsports.com/2020/12/15/porsche-announces-development-of-lmdh-prototype-to-compete-at-daytona-le-mans/. live.
  21. Web site: 2021-05-04 . Porsche and Team Penske to collaborate in motorsports . 2023-07-13 . Porsche Newsroom . en-us . 13 July 2023 . https://web.archive.org/web/20230713055614/https://newsroom.porsche.com/en_US/2021/motorsport/porsche-team-penske-collaboration-lmdh-prototype-fia-wec-imsa-24380.html . live .
  22. Web site: Porsche, Multimatic Partnering for LMDh Program. 18 May 2021. IMSA. 27 June 2022. 18 July 2023. https://web.archive.org/web/20230718162819/https://www.imsa.com/news/2021/05/18/porsche-multimatic-partnering-for-lmdh-program/. live.
  23. Web site: Porsche Starts Testing LMDh Prototype, Confirms Twin-Turbo V8 Hybrid Power. carscoops.com. Brad. Anderson. 27 June 2022. 27 January 2022. 19 February 2022. https://web.archive.org/web/20220219085052/https://www.carscoops.com/2022/01/porsche-starts-testing-lmdh-prototype-confirms-twin-turbo-v8-hybrid-power/. live.
  24. Web site: Porsche 963 Revealed with Official Livery, Engine Spec. Daniel. Lloyd. sportscar365.com. 28 June 2022. 24 June 2022. 18 July 2023. https://web.archive.org/web/20230718171658/https://sportscar365.com/lemans/wec/porsche-963-revealed-with-official-livery-engine-spec/. live.
  25. Web site: The Porsche LMDh prototype enters active test phase. Porsche Newsroom. 27 January 2022. 28 June 2022. 18 July 2023. https://web.archive.org/web/20230718163802/https://newsroom.porsche.com/en_AU/2022/motorsports/porsche-lmdh-prototype-test-phase-hybrid-drive-27204.html. live.
  26. Web site: The prototype that Porsche hopes will become its latest legend. Gary. Watkins. 13 May 2022. 28 June 2022. motorsport.com. 18 July 2023. https://web.archive.org/web/20230718170606/https://www.motorsport.com/wec/news/the-new-prototype-that-porsche-hopes-will-become-its-latest-legend/10303741/. live.
  27. Web site: LMDh: first tests on an international racetrack successfully completed. 17 February 2022. 28 June 2022. Porsche Newsroom. 8 April 2023. https://web.archive.org/web/20230408023817/https://newsroom.porsche.com/en/2022/motorsports/porsche-lmdh-prototype-tests-racetrack-circuit-de-catalunya-spain-27463.html. live.
  28. Web site: Porsche LMDh Prototype Plays Twin-Turbo V8 Music During Spa Test. Adrian. Padeanu. motor1.com. 28 June 2022. 15 April 2022. 18 July 2023. https://web.archive.org/web/20230718162820/https://www.motor1.com/news/580170/porsche-lmdh-prototype-spa-test/. live.
  29. Porsche's Most Exclusive Model Will Set You Back $2.9 Million. Marshall. Pruett. Online. Road & Track. 25 June 2022. 28 June 2022. 18 July 2023. https://web.archive.org/web/20230718173827/https://www.roadandtrack.com/news/a40417267/porsches-most-exclusive-model-will-set-you-back-dollar29-million/. live.
  30. Web site: Porsche to Allocate Four LMDh Customer Cars in 2023. Daniel. Lloyd. 2 May 2022. 28 June 2022. sportscar365.com. 31 March 2023. https://web.archive.org/web/20230331001042/https://sportscar365.com/lemans/wec/porsche-to-allocate-four-lmdh-customer-cars-in-2023/. live.
  31. 'There was one clear option' JDC-Miller's Church says of becoming Porsche GTP customer. Richard. S. James. 25 June 2022. Racer. Online. 28 June 2022. 18 July 2023. https://web.archive.org/web/20230718162820/https://racer.com/2022/06/25/there-was-one-clear-option-jdc-millers-church-says-of-becoming-porsche-gtp-customer/. live.
  32. Web site: JOTA to field customer Porsche LMDh in 2023 WEC season. motorsport.com. 28 June 2022. 25 June 2022. Gary. Watkins. 18 July 2023. https://web.archive.org/web/20230718171658/https://www.motorsport.com/wec/news/jota-customer-porsche-lmdh-hertz/10328422/amp/. live.
  33. Web site: 2022-11-16 . Proton Competition to run the Porsche 963 in FIA WEC and IMSA . 2023-07-13 . 24h-lemans.com . en . 20 September 2023 . https://web.archive.org/web/20230920185204/https://www.24h-lemans.com/en/news/proton-competition-to-run-the-porsche-963-in-fia-wec-and-imsa-56819 . live .
  34. Web site: New Year, New Cars: Porsche 963. Stef. Schrader. IMSA SportsCar Championship. 3 January 2023. 25 January 2023. 25 January 2023. https://web.archive.org/web/20230125092733/https://www.imsa.com/news/2023/01/03/new-year-new-cars-porsche-963/. live.
  35. Racer. JDC-Miller plays the GTP waiting game. David. Phillips. 21 December 2022. 25 January 2023. 25 January 2023. https://web.archive.org/web/20230125092735/https://racer.com/2022/12/21/jdc-miller-plays-the-gtp-waiting-game/. live.
  36. Web site: 61st Rolex 24 At Daytona – GTP, LMP2 and LMP3 Team-by-Team. Tony. DiZinno. 24 January 2023. 25 January 2023. IMSA SportsCar Championship. Daytona Beach. 24 January 2023. https://web.archive.org/web/20230124190708/https://www.imsa.com/news/2023/01/24/61st-rolex-24-at-daytona-gtp-lmp2-and-lmp3-team-by-team/. live.
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