According to the page that Frank50 pointed to, it would be a '51 model.
Not that they couldn't have been switched in 70+ years, but what kind of outside door handles does it have, turn down ('51 models and earlier) or push button ('52 models and later)?
And where did you get the "Body PK" from?
'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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