I like the idea of the Paxton style belt system.

I think some of the early Mustangs had the Paxton blowers, but not sure which ones.

I think, but not possitive, that some of the Paxtons used a plate between the manifold and carb to blow air into the intake mainfold. Otherwise you would have to o-ring the throttle shafts if you used the over the carb type.