yes you're missing that the engine ID number was used on titles back in the day as the vin [not "VIN" in todays sense], not related to the overall vehicle, which has a separate ID number [manufacturers serial number] of a completely different format and a different sequence number from the one on the engine, if the engine had been changed the title should have been changed too, "matching numbers" for the vehicle hobby is a whole different thing where all components have numbers and dates that relate to the particular build of that particular vehicle and match the actual VIN on the door [or windshield] plate
Bill
