I would take my 650 throttle body(650,700,750and 800s all have the same one)bowls,metering blocks ect. and buy Proforms main body(PN-67100C).They are only a hundred bucks but it is one of the best hundred bucks I have spent.What you will have basicaly is a Holly 750 HP,and they cost 630$.The Proform body will run a lot better than a standard dubble pumper,idle down faster,run smoother and make more power.Its win win.Remember to install power valve blowout protectors.You will have a great carb and will not be sorry.
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