IMO the next step after Edelbrocks are indys, if I do another small block that's what I'll use. My Edelbrocks went 293 @ .650 on Curtis Boggs bench with 2.02 valves, they have 2.05" in them now. My 10.9-1 408 with a flat solid cam has ran a best of 6.57 @ 104 with a 1.38 60' uncorked and 6.70 with a 1.41 60' in street trim on pump 93 at 3260 pounds.