Xtreme GTR competes in World Time Attack Challenge with their special Nissan R32 Skyline GT-R. Under the carbon fiber hood sits a turbocharged 2.8 L inline-six built by PMC Race Engines. It features a Bullet billet aluminum block, Nitto Performance Engineering 2.8 L stroker crank, Special Piston Services pistons, Carrillo rods, Maatouks Racing RB26 race head, and Hi Octane Racing dry sump system. The engine made 950 whp on ethanol fuel and 32 psi of boost from a Precision 6870 turbocharger but with some recent upgrades is now making over 1000 whp. Power is sent to all four wheels using an Albins ST6-I 6 speed sequential and Nissan transfer case. The 1340 kg race car rides on MCA adjustable coilovers and stops thanks to AP Racing brakes.