Ford Car Parts (the infamous MPC), 75 ed, indicates that the service part number for both MT and AT cars is C4OZ-9510-F (Motorcraft CA-351) which was replaced by C4OZ-9510-G (Motorcraft CA-351-A). That's factory installed C6ZF-9510-C and C6ZF-9510-F. All this means is that the replacement stock number box (or paper tag) had an item inside that would work in your application. What has been found over the years as a NOS replacement is a variety of part numbers, as service stock number C4OZ-9510-G, also replaced the early Fairlane (63-65) and Mustang HP carburetors. Remember, Ford was not building Concourse grade cars. Ford dealer service departments were the same.
Jim