predator heads

i run a predator motor in my car. it's a 591 ci. steve gill sold the predator head co. to indy cylinder. he still sales the heads and all the parts for them. he would be the guy to talk to if you want to get into one. i had a B1MC 580 ci motor. it only made 1080 hp. and it was all top of the line stuff. my Predator motor makes 1280 hp @ 7600 rpm. i can answer some of your questions. my heads flow over 525 cfm i run top sportsman with a 99 avenger. my car runs low 7.40s on motor. it's set up with two stages of nitrous but i haven't used it yet. it should go into the mid 6.60 to .70's when we do spray it.