Our classing system is pretty bad. Gutting the interior with everything else stock puts you in the race class. Even r rated tires on a totally stock platform puts you in the race class. Unfortunately the bigger goal is door to door. Because of this I am building as I can afford bits and pieces and will use lap battle as practice if nothing else. I ran a stock interior mini Cooper before and consistently took 3rd in a lot of events, but honestly I'd rather run race rwd than race front wheel drive, even if it means I lose