I run that compressor and housing on my Turbo 2.3. I don't really have much to compare it to, but I like it. It takes me 1.3 seconds to get from full vacuum to 10psi (wastegate setting at the time). I should have some dyno numbers and datalogging after next saturday.

I think you're going pretty big on the turbine though. A stage 3 with a .63 is going mid 11's on a stone stock 280 turbo motor with non turbo computer/injectors. How fast do you want to go?