One part of my build that I'm questioning is the carb and intake manifold. The 390cfm Holley is the smallest 4 barrel to fit on the Offenhauser, but when you run the math on it the max RPM that would justify that size is closer to 6,000 rpm. So I'm wondering if even the 390cfm is over carbed for a street build? I know I see a lot of guys throw 750cfm carbs on a small block Chevy for the street, which makes more peak power but at the expense of power for everything below that. I'd rather have as much power off idle on up and a lower peak power, because for a street driven car that is just more fun. Am I better served with a 2 barrel? If you use a 2 barrel, should the stock truck intake manifold just be used?