R33s-Goesoff:
it all depends on what u r looking for on ur car - wheels, bodykit or performance.
i just spent $4200 on t04 highflow, microtech LTX16, custom inlet plenum with xf throttle body, exhaust manifold and dump/front pipe, turbosmart external 35mm wastegate, malpassi rising rate adjustable fuel regulator, bosch motorsport 700hp fuel pump, new fmic pipes to suit plenum and turbo design
also ive just spent about another $1300 on a set of forgies with rings etc
goodluck with deciding on which way u like to go