carbking, you out there???
Yes, but no good answers on this one.
The identification number on Rochester B's is on a small triangular tag. Once the tag has been removed (commercial rebuild, purchased through FLAPS) the carb is extremely difficult to identify for a kit.
Some of the earliest B's had the last 4 digits of the tag number stamped in the airhorn gasket (original gasket only).
Not my favorite carburetor.
Jon.