you can of course use any turbo with modifed flanges if it will fit in the very small space we have. I think and have been told super T28s are capable of 650rwhp with the right combo of impellers. More than most will ever need. You are like me always looking for a little more. But I am starting to wonder how ot put it to the ground and how the clutch will hold at what I can make with whats avalible.