you can pretty much use any turbos out there in the SR, from a T25,T28,16G,20G,T3,T3/T4,T4,T66,GT25,GT28,GT30...etc, Its all gonna depend on the flange the exhaust manifold and whether you'll be able to push 30psi on a T88 or should stay with a T3 @ 18psi...I mean I've seen guys with a CA18DET motor pretty much stock bolt on a T66 and not spool until reaching redline pretty much, then I've seen guys boost 15psi on a stock T28 putting down about 300hp and spool up from 2000 rpms very streatable, turbo choice will depend on application and modifications.But for a turbo guide you should try do searches on google/yahoo and learn more about them, you can start with
http://64.225.76.178/main.htm
Take care
mario