This is what I have on mine (Big port Commandos) B-1 BB Rockers. I had to move the CL of the hold down bolts. W-2 rocker gear bolts right on according to Ryan at ShadyDell. The heads themselves need work in the chambers because they are very small and shroud the valves, but with some work they are very nice. They can also support a big inch small block like mine (416) with porting, or will work great for a smaller motor with minor work. Mine peaked at 6,250 on the dyno. These heads are the same as the Aluminum Magnum R/T heads but have the Intake holes drilled for the old type manifolds.
