by JBucki10 » Sat Jan 14, 2017 5:20 pm
Firstly: eww Impretzels
Secondly: what model of STi are you trying to contract? That effects alot of what you want to do. To answer your question simply, you'd want to change basically everything, since you've got it. You need to chance minimum engine, gearbox, rear diff, drive shafts. Depending on the model you may get better brakes and steering rack which you'd want to put on the car etc.
Thirdly: You'd need to engineer the car for the engine change since it was not available in the model of car. Same with the brakes if you change them over.
Put it simply, if you want a WRX sell your car and buy a WRX, or a GT. Doing the sort of thing you are thinking about is a fuck ton of work and headache!