Well i guess thats the question. Best Machine is building me a 408, forged crank, H beams, 11 to 1 pistons, Comp solid cam, indy prepped Edelbrock heads, super victor intake, and they suggested the big Hooker headers which are no longer available. The only choice seems to be the TTI steps, hooker 1 3/4 or dougs 1 5/8