homer - the type "B" was produced from 1949 to 1967. SEVERAL different pumps were used during this time. We make probably 50 different repair kits for the various model B Rochester carburetors.
Jon.
Good carburetion is fuelish hot air The most expensive carburetor is the wrong one you attempt to modify. If you truly believe "one size fits all," try walking a mile in your spouse's shoes! The Carburetor Shop