ive done mine, if i dont include doing things twice and stuff like that, for around $3000
thats
CA18de+t, r31 diff, fully adjustable front end, r33 skyline brakes front and rear
thats doing everything myself, apart from getting an axle cut down for the diff and the tailshaft shortened
but you dont really need as much as what ive got, i only did most of it coz it was cheap to do