GMC1937, that must be a GMC thing, being stamped on the frame, Chevrolet didn't start that till 1955. My '37 didn't have any numbers except the cowl tag. The title showed the engine ID number but wasn't anything close to the cowl tag number. I always thought they used engine ID's on the title, that would explain the VIN not matching any of the web based VIN decoders. Joe