1972 351CJ-4V Motorcraft 4300D Carburetor, manual 4 speed transmission - DSO 52 and DSO 53 California only. D2ZF-CA stamped on the carburetor base, spreadbore 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.