Doesn't matter if your car is stock, they have stock classes. As long as your car doesn't leak anything, battery is tied down, everything is in good running order you can race.
It's $35 for you. Basically just show up at 7am sunday, you have to register, get tech'd in, and a few other things. Come find me when you get there, I can show you the ropes.
Chief, you have street tires don't you?? I guess I don't blame you, some people really don't like running in the rain, though it's supposed to be off and on. I'll be there.