I'm new to Firebirds so I don't have a clue for my car, a '75. I saw them on the top of radiator core supports of '79's at the Nationals but on mine, none are present on the core support (or at least on top) Any numbers on the back end of the car also? Obviously, they would match the last 6 digits of the VIN. My drivers door tag is present and correct but don't know where to look for the others.