i've been searching around about turbo kits and stuff and i was wondering if i buy a greddy turbo kit for a D series motor how much hp will i put down with all stock spec running 8psi and is it possible to upgrade to a bigger turbo using the same manifold?

 

I think a lot of people on stock motors are doing like 180hp roughly give or take the average....You can always put a bigger turbo on, I think the 18G B series turbo will fit on that manifold, also you can always have an adapter plate made to bolt like a t3/t4 or something to it later im sure.....Adapter plates can be done for anything, if not D series guys wouldnt be mating different style turbos onto hf manifolds