not that much a few things. Large extend port, additional dowels, running 14psi with ebc, ECU, exhaust, larger intercooler, RE540S, TE37, slightly upgrade brakes, Apexi N1 Coil overs suspensions.... a few more things but i can remember - my cars audio system has been completely stripped out too....
350rwkw from a 300zx - pretty damn good.... these cars are very hard to work on.....