My goal was to get a budget supercar.

I narrowed my search down to the 300zx Z31.

I found a unfinished project car that already had the JWT Kit.
I researched and found used parts from other people parting cars on z31performance.com
You can put together a 400+ Hp car for a decent price

1986 300zx turbo w JWT 450= $1800
Holset HX35W turbo eBay = $230
87' 30A tranny + LSD = $700
Apexi N1 exhaust = $75
3" full exhaust = $600
XXR 521 18x9.5 18x10 = $600
Used G35 tires = $300
KGB adjustables z3r springs = $800
New. Bushings all around. $150

Just keep searching and hunting for deals. It is not an easy task to keep going with a project car but never give up.