It was a 13:1 408 both intakes untouched nitrous cam and converter the car made 442 with ported l92 heads and gmpp with a ultra low profile elbow, we switched to the vic jr and the reg low profile elbow before retuning and it made 461 after tuning it was right at 470. Car picked up .4 on motor after intake swap and tune. The corner runners on the gmpp are about twice as long as the center runners and really messes up nitous flow. Was only turning motor to 6800 it was a hydro cam so really no need to turn it up higher then that, no real power picked up. We picked up hp all over the graph except under 3k, which we had a 4000 stall leaving on the brake so that really didnt matter at all anyways.