Classing Question

[tauntaun]

My friend is interested in autox, but I'm not sure what class he'd be registered in. He has a 1991 Audi 200 20v Turbo, which stock is in GS. However, this car has an RS2 exhaust manifold and a chipped ECU. I was looking through the different categories on the registration page but I'm confused as to the acronyms. The turbo mani and ECU chip are the only mods.

[lcoleman]

I'm thinking that would fall in one of the *SP classes. That said, he should come run STM!

[MARKP]

Here's the list of possible options based on what you mentioned.
CSP
FP
SM
STM - local only