After all the problems my Holley 600 has given me, I have decided to just go out and buy a whole new carb. I found an edlebrock 650 and was wondering if this would be too big? Right now i have an edlebrock performer 289 intake manifold, mild cam, shorty headers, and flowmaster exhaust. Would these mods justify the bigger carb? And by the end of winter i am going to have underdrive pulleys, and possibly gt 40 heads.