I have a '56 GMC model 150 that may be a 1955 titled as a 1956. I have been consulting with an automotive /truck historian, and that is the conclusion he is coming to, and I agree. My truck has the '55 trim pieces between the front bumper ends and the upper trim ends with the park lamps. (which is where my questions started) My hood emblem and side emblems are chrome, not painted white as in 56, the truck has two piece 15" rims, all 4 the same with 55 stamped on the pieces- in 1956, the industry went to tubeless tires and 17.5 inch rims to avoid problems with putting tubeless tires on tube rims, and my truck was originally 6v with the pedal starter (which it still has- was converted to 12v. 6 volt was phased out in 1956. Are there any other differences folks know about? Also, my truck has a 270 small port six, four on the floor with compound low, and vacuum powered wipers.
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