I have my new combo with a 350 .030 over about 10:1, 280h Comp Magnum cam, RHS Vortec heads & a Performer RPM Air-Gap. How big of a carb should I need? I have my 600 CFM Edelbrock on it now & it seems to fall off around 5000 RPM & I think this combo should pull up to at least 6000. I have a friend with a 750 vac sec. Holley & he said I could try it. Any thoughts?