Hey there! I would strongly suggest a tdo 5 turbo, evo 8/9 stock exhaust manifold, evo 9 front mount intercooler, and sti pink 565cc injectors. With ecu flash tuning, this should get you a decent 1.4-1.5 bar boost and 300+whp. With additional high cams such as gsc stage 1 or hks 272 and...