yea those hp numbers seem about right...but in my setup with itr pistons and itr valvetrain with buddy club spec III cams it made 215 whp....it all depends on the tune i guess....and PLEASE...go with a lsd s4c tranny...if they dont break on you they truly do make better times....my car seemed noticeably slower when i put the ls tranny back in...but much more driveable