Bored CP forged pistons, hks step 2 cams, Cosworth metal head gasket that's thicker for lower compression, 810cc injectors, exedy stage 3 clutch, lightweight flywheel (11.5 lb), turbo is 57 trim 60ar garret, z31 maf out back r200 clutch LSD (strongest that you can fit in a 510). I'm sure I'm missing some stuff