Read through the last few pages... guys trying to climb the mountain to get the head that will make 600 hp and hold stock rockers.... well quit climbing and look down at your feet. You're tripping over them. I have them now on a 318 on the stand..... "302 heads"
Throw a solid roller and some compression at it and the TrickFlows will get close enough to scratch 600 lol. That kind of build is not at all what most people want though.