i got a 76 gmc sprint sp (el camino ss) and was wondering if someone could give me an estimate on hp, torque, and possible e.t. it has a 73 sbc 400, q-jet, performer aluminum intake, 1 5/8 full length headers, comp cams xe268 cam with matching springs, pocket ported stock heads, stock bottom end, th350c trans, and around 3.23 open rear end. thanks for any suggestions.