Some old cars/trucks were titled by the engine # and some by the VIN number. Just depends on the year and state. My 52 was titled by the engine # which had been altered, and didn't match the title. Va. DMV sent out a state police officer and he ended up meeting me at the metal recycleing place to crush the motor! It's illegal to poccess a motor which the #'s have been altered. Anyway, he took pictures as they crushed the bottom end (block only) but he then issued me a new title by the # on the door. So everything worked out.