YES you should get the head studs, and the vgt's from elite have the same fins in them as the o3 turbo. I would guess around 450ish. elite told me w/ there tune, stage 2 injectors, vgt ss, and regulated return, plus all my other mods I would be putting down around 530. Oh yeah I have head studs on sale right now. find the post head studs on sale. You will deffinitly want these