Can't find numbers on Carb

I want to rebuild the carb that came with my super six upgrade, but can't find any numbers on it. Of that translates to parts guys that can;'t help me with a rebuild kit. I want to have in hand today and not order online.
I think I have narrowed it down.

It is this carb in this link.

http://www.carburetor.ca/carbs/kits/CK372.htm

My question how do I select the right carb number?