sounds like you DO want to eventually build so i would suggest going ahead and getting yourself a good tubular manifold. Mainstream can make you one or you can just buy one. Wanna keep ac and all that jazz then i suggest a custom one. get something like a gt30r or similar nonBB like an sc34 which is slightly bigger that will make stout power either way you go, until you get the hunger..but you may not. SC34 is a great mid power turbo. Supports gobbs of power either way you go.