50 trim TO4E in a .50 a/r housing on the compressor, 76 trim T31 in a .63 housing turbine side will do much better than that. Mike --- Heick Resources <blitzmr2@insightbb.com> wrote: > Hi. My HP goals are around 300 WHP with relatively > quick spool. This is a > street and road course car, not a drag car.