Roadrunner or Not
Wow, I'd be seriously pissed if some DMV clown impounded my car because of lack of knowledge about VIN laws.
Muscle-era mopar VINs are really great in that you know exactly what you have just by looking at the 1st 7 digits. If you ever tried to figure out a non-mopar of similar era you know the VINs don't contain nearly as much info & you really need docs to find out what you have. Maybe a misinformed GM guy fabbed the VIN? They obviously didn't do their homework.