i run a 565 chevy in a fox body mustang on a radial 3100 pounds 2 foggers. i have been 8.10 170 124 60 on 315. want to step up a little, cant afford bid chiefs or a new motor. i have real old casting dart 360, and an out of the box brodix sonnys manifols. can i get any faster with a better conventinal head with out going to big chiefs? what is the baddest conventianal head for my combo?