Afternoon guys, I’m currently refreshing my classic v4 sti, just had abw, new wheels and new paint. Now I’m pricing up and planning to move onto the mechanical side of things.

current spec is just exhaust system and air filter on what I believe to be standard v4 motor.

hoping to get around the 400bhp mark and was wandering what spec people would recommend? Keep engine standard and up the ancillaries? Rebuilt 2.0 or go 2.1? Will the top mount cooler be man enough? What turbo and injectors? I have a walbeo fuel pump sitting waiting. Anything else I’m missing?

management wise will prob be esl or alcatec

cheers