+1 to buying a car with basic mods
When I bought my 32 is came with coilovers, fmic, catback, gtr bonnet/grill.
That's stuff I didn't have to spend money on which left more cash for RB30DET, RB25t gearbox, 2-way diff, big brakes etc etc.
Also did the same with the Stag I just got, the guy had blown heaps of money getting C-Red to put in coilovers, fmic, full exhaust, haltech, hiflow turbo etc.
Edit: just saw this line..
So you're going to pay someone to install all the shit you want? hope you have a large bank balance as chqbook racing is $_$. If that's the way you want to go about it (i.e. NOT doing the work yourself), then do the smart thing and save yourself some money by getting an already mildly modded car. Labour is a killer.