I have a 86 mustang gt with a 331 stroker, ported performer heads, unknown cam, 1.7 roller rockers, victor jr., 650 demon. It is a 5 speed car with the tremec out of a summit magazine. My question is it made 420hp and 404 tq on a dyno dynamics dyno at the rear wheels and I was wonder if that sounds right to you guys cause I was thinkin mabey it would make 375 or so at the back tires. If you need more information just ask and Ill tell you all that i know about the car.