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Installing a 950 Body on a 700 baseplate will leave you with a "reverse" step that will not be good....The 950 body is 1.750 where it meets the base plate...and your baseplate is 1.720.....If your going to do the 950 body then also pick up a 1 3/4 (1.750) base plate....Then you have a good start to a carburetor if you have enough engine.....why not just go with the 750 body....that will match your 700 baseplate.....whats your engine specs?....Jesse

www.bigsperformance.com

I just was thinking of that before your post, i came to realize that 850 holleys have bigger baseplate blades. Im doing a 10.5 cr 410" stroker sb, hyd roller, 1 7/8 headers. I have not picked cam specs yet.