I used to make 420hp on the stock motor at 177000 miles on it with no problems. What your looking at is every bolt on possible plus a tune. -walboro 255 fuel pump -550cc injectors -front mount intercooler ETS makes one where you can keep Ur fog lights. -Magnus intake manifold -big evo 3 16g turbo -3 inch straight pipe turbo back exhaust. -262 cams -upgraded clutch and flywheel -fp exhaust manifold -evo 3 02 housing I made 350whp on 91 octane tuned with dsmlink