We are thinking towards the comp cams xtreme energy 268 cam with a set of full port and polished 601 casting heads, with pro magnum roller rockers, about what size carb you think we should go with, would a 600 performer be fine, still undecided on the intake though, thinking of an edelbrock performer, performer rpm, edelbrock torquer, or a weiand xcellerator, the one with the straight runners, not the one that looks kinda like a torquer. We have a while to build it so surely we will decide on something. The 400 horse build looks nice but we don't need horsepower at 7200 rpms, thats the idea behing using a xe 268 cam, the 400 horse build used a 292 magnum.