I have a 60-1 turbo with a P-trim turbine wheel, and it is in a .70 a/r comp housing, and .82 a/r turbine housing. I am curious as to how efficent this turbo will be at high rpms? Will it fall off at a certain rpm? Will the P-trim turbine wheel help with top end power, or will it just retard my spool time? I am really interested in what it will do, cause I would like to rev fairly high (9k+), but if the turbo isn't going to make power that high it is pointless to rev it that high. Is there anything that I can do to help this turbo to make power up high? I do have all the supporting mods, so don't worry about that. Also will big cams (ie BC 288's) make this turbo even more laggy? Is the P-trim wheel that much bigger over a stage 5 (t350) wheel? What kind of spool can I expect with this turbo? Thanks.