Yeah, all a 4V carb is just two 2V carbs. With all the circle track 'bomber' divisions or of the like, the 2G or 2GC are mandatory (maybe more if Fomoco and Mopar can run) unless the Holley 4211 is allowed. I have quite a few for my sisters race car that I got for close to zero. I have never played with Autolites, I know they are pretty plain looking compared to a Holley.
If you ever need to a 2V carb, check the local race track (mostly oval I am not sure if drag strips have a 2V classes) to see if they require a 2V carburetor to be ran in one of the classes, you could score a couple for a decent price from a racer. The hot rodding scene might be a few bucks higher if you are looking for the factory carbs of any type.