if ur gonna stay stock turbo and are looking for like 350-375whp get 9, if u want more ur gonna have to upgrade turbo and do cams so just go ahead and get an 8 cause really the only differance is a slightly bigger exhaust side on the turbo and the cams in the 9, but if ur gonna be replacing the cams and turbo why pay more for a 9 when u can get a 8 and use the money u saved to make power.Originally Posted by 2jz240sx