Originally Posted by turtle64b

Skip a ported upper (replaced by the Stillen manifold), but a ported lower (I went Z1), decent headers (I still have stock exhaust manifolds), test pipes (or good high flow cats) (I went Z1 test pipes) and a solid catback (I went with Borla for the sound) would be good mods for both NA and boosted. Again, TBs are a relative unknown, so if someone wants to chime in about gains from the 70mm TBs over stock, please do!

Hold off on fuel mods and things like that since you'll have everything apart anyways for the build and its convenient to knock those out with the SC build.