Nice swap, looks good and clean.
As for the Turbo Setup, Look into Precisions new GT line. I think something like a GT32 or GT30 would work very well. I have a friend who runs the gt30 on his stock gsr engine and ran a 12.9, I have another who is running the gt32 on his sohc, it spools hard and pulls crazy for 8lbs.
Goodluck with starting it up