(TWR) used the XJR-14 chassis number 691, re-engineered by David Fullerton and further modified by Porsche.

For an engine, Porsche used one of their longest running motors, the Type-935 turbocharged Flat-6. Originally used in the Porsche 956 in the 1980s, the engine was still powerful enough to power modern prototypes. While Porsche's new 911 GT1s used