The car also meets the regulations for the International Motor Sports Association’s (IMSA) WeatherTech SportsCar Championship for the Prototype class.

Onroak Automotive built a brand new chassis from scratch and focused on improving the mechanics of the car from the Ligier JS P2.

The mechanical features of the car that were concentrated on was the implementation of a new axle, nut, and rim to lessen the time of tire changes, the efficiency of the axles, weight distribution, accessibility of mechanics at the front of the cockpit, aerodynamic efficiency, LMP1 style power steering, and a limited number of chassis pieces.

[8] Seemingly an evolution of the Onroak DPi, the JS PX utilizes a 3.8 liter V6 twin-turbo engine, yet developed to 825 hp.

The chassis, suspension, and transmission are identical to the P217, though Ligier optimized ABS, TC, and ECU systems using input from Olivier Pla.

[9] A similarly large front panel to that of the Nissan DPi is utilized, with an extended nose and a copycat element directly under it.

The car would be featured as the main protagonist's Le Mans entry in the 2023 film Gran Turismo, complete with a racing livery with PlayStation and NISMO sponsorship, further proving relevance to the DPi racecar.