[MATCHBX]

Dpends what car you're driving. If it's AWD turbo you will be in open stock (which is my class). If you are running a front wheel you will be in either group2 or group5 (depending on displacement and whether or not you are turbo'd). If you put rally tires on your vehicle, your class will be bumped up to prepared (i.e. open prepared or group2 prepared or group5 prepared). There is a website that lists them all but I don't remember where it is.

As long as your car passes tech inspection (no massive fluid leaks, wheel bearings and ball joints are ok, at least regular seat belts, non sticky throttle, etc.) and you have a helmet with a Snell rating of 85 or better, you can race. If you don't have a helmet, there are always loaner ones there. I will have my extra one there as well.