Remember, headers ADD torque at ALL rpm's. A difference you can feel.
I'm also of the compression-over-flow crowd. BUT, I never install 516's with the 1.60 exh. valve. Always add the 1.74 valve and a quick bowl/intake/exhaust template porting and YOU WILL feel a difference in the whole rpm band. 13.08 at 106 mph with a 3600 car with my favorite "boat anchors.
