318 will not start

Does anyone know where I could get a new carb or rebuilt one that would be a direct replacement for this carb?
People have had really good luck getting them through Summit the Rebuilder that does them at Ko or something like that does a good job

I bought a car for my buddy and taxes being that he didn't have any kind of carb to send me to build and he put it on and it was damn near perfect right out of box