Bullseye S256 (Borg warner based) will get you there, don't think you will see max torque at 1500 though. Smallest housing is the .55 AR stainless turbine housing, but still not going to make max torque by 1500. It is right around a 30R sized turbo, maybe a bit bigger. We have had good success with it on 2.5 motors (subaru) and in fact are putting one on a Sti right now.