1972 351CJ-4V Motorcraft 4300D Carburetor, automatic C6 transmission - DSO 52 and DSO 53 California only. D2ZF-DA stamped on the carburetor base, spread-bore design of 715 cfm. Rebuildable core carburetor with proper numbers, we don't always have the factory Ford Autolite tag that was affixed to the top.