there's an HPDE+ class which even has an amazing s2k guy in it (jackie ding) - he lost to a mustang and vette last year although he could certainly still take it this year. i bet he'd still be moar fastars in those cars though.
I know Jackie and his car has come a long way, it now has a wing and front aero so he can hopefully be even more competitive. He beat me by .8 seconds last year at WMHM for 1st place in N+ class. Bastardo! The craziest thing about that kid, that s2000 is his ONLY car, he daily's that car and he lives in an apartment, so the upgrades and all the shit he does is done in a parking lot outside. I have a ton of respect for him.