The rules (or not) are pretty loose. I too have seen everything from glas bodied tube frame cars with all aluminum motors to the two street legal black Plymouths. All of us have fun and that's what really counts. My Mom likes the "Stocker" type cause that's what she drove(Factory Lightweight). The crowd likes em all. Sure would be nice to be in the 8s though. (9.18 @ 144 MPH)