Not so much an idea as just a different set of rules but dont go looking for the SCCA to be adopting that ruleset anytime in the near future (it has been suggested on the SCCAForums before).
Different SCCA regions do different things. The local region (D.C.) is more strict and only runs national classes. Other regions come up with their own classes that may or may not follow national SCCA rules (see the difference between ST2 and STS2 for example)
When I started AutoXing (last summer) my only mods were a Short Shifter and 16X7 wheels. This put me in STS. I got my ass kicked by half the class and suprised the hell out of the other half (ok I suprised the hell out of more than just the bottom half of the class) with what a basicaly stock car could do. I knew that to be competitive in STS I would need to get better springs than the stock SE ones and and better shocks than my 142,000 miles old ones. My car ended up dieing and I got a miata instead of upgrading my car this winter. I now know what mods to make or avoid making if I want to stay in different classes for AutoX.
