Budget for 818 Build, what have I missed?

[Sgt.Gator]

You'll need new tires on the wheels. Figure at least $1,000 with shipping/mounting/balance.
Probably an AWIC, Ducts.
Redo all the suspension bushings with Whiteline or another vendor.
Switches, relays, fans.
A dyno or street tuning session. $500. Cobb Accessport $650.
If you're tall you may need to cut off and raise the roll bar height.

[BossRabbit]

You'll need new tires on the wheels. Figure at least $1,000 with shipping/mounting/balance.
Probably an AWIC, Ducts.
Redo all the suspension bushings with Whiteline or another vendor.
Switches, relays, fans.
A dyno or street tuning session. $500. Cobb Accessport $650.
If you're tall you may need to cut off and raise the roll bar height.

You're going a little fast for me but I see there's more things to consider.

What's an AWIC? Ducts are for brakes I guess.

Tuning / Cobb seems like a luxury which I can ill afford.

I should fit in the car even with the Subaru seats.

[Jeff Kleiner]

You gotta' face the reality that a 2 grand donor car is going to be pretty tired. You're forgetting to factor in repair, maintenance and normal wear items to make the donor parts servicable; brakes (pads at a minimum, perhaps also calipers & rotors, flex lines), clutch, steering and suspension, engine timing belt, water pump, etc.

Good luck with your quest!

Jeff

[KenWilkinson]

Air to Water InterCooler