I don't get it. You say you are holding off on a turbo but you are buying this:
7MGTE T4 Flanged Exhaust Manifold? Does that leave anything in the same place so that you could buy pre-fab downpipe and catback systems? I would think that you would be largely on your own fabricating your entire exhaust once you got that. Is your stock turbo going to bolt up to that? Am I missing something?