OK, I give up. Help me pick out a new carb for my combo.

Where do you get the info on venturi sizes and the like? I can't find them on Holley's website.

Is it the throttle plate that makes it a "950" then?

750 main body with the larger 1 3/4" throttle blade.

http://www.holley.com/data/TechService/Technical/Carb Numerical Listing.pdf