SC's had AC as an option if my memory serves me correctly so you can delete it. If you want to be 100% sure e-mail Lance Weeks at
LWEEKSPORS@aol.com and he can give you a definitive answer. Once you have the answer it's a good idea to print the e-mail you get from him and staple it in your logbook, this way if there is any question at a race you have backup from THE MAN..
Cheers, James