Just for other people who may look up this thread in the future, that 838438 GM part number that the Filling Station listing in the post above also fits GMC 1939-1953 "ALL" (models 350 or smaller), but not 55.2-60. I don't have 54-55.1 documentation.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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