my buddy did the swap into a ae86 and this is what it cost him:
2500 for a half cut shipped from vancouver to his door
600 for custom bellhousing from australia to mate with a w58 tranny
600 for new clutch and pressure plate
500 for w58 tranny from a 85 supra to handke the added hp
500 for a rear diff outta a 81 celica to handle the added hp
100 for the shortened balanced driveshaft
60 made his own motor mounts and tranny mount
600 for a detroit locker lsd shipped to his house
550 for the new 4 row custom brass rad to keep it from overheating, and to relocate
the inlet/outkets
1200 for new brembo brakes and 12" rotors all the way around because he cooked the \
original brembo rotors with portfield pads
free did all the wiring himself (he does electronics for a living)
1000 just for the material to make custom headers to fit the car, did all the tig
welding himself
600 for the rest of the exhaust and mufflers (flowmasters i think)
This is just the stuff i can remember off the top of my head, i'm sure theres other things he's had to buy that i'm missing, like the starter went when he got it, the powersteering pump was missing, ect. all add up. All in all he said he spent about 10 grand to do this swap, now do you have to do everying he did? no. But it won't last long like we have found out (cooling, brakes ect)
I also forgot to mention that he's running the stock ECU, but at almost 300 hp in these cars - who needs to add more?