I don’t think you will find one. The carb design was changed in 1955, and the float bowl gasket is different. Besides, they don’t include a float anyway. Might as well order individual parts.
The problem is the float. It was rotted! I have a couple new float but it was different for center to the hinge. I may be more creative to adapt the old hinge to new material float. Or if you know the float part number for it.