Question about classes

I have been using the "alias" SuperStock for about four years now. Just this past spring when I attended my first AutoX, I heard the class called superstock. I didn't notice which cars were in that class and I have been having some trouble finding out. I was hoping someone could fill me in. I know that other forms of racing, ie. motorcycles use the class name also. I just don't want to sound like some goober who thinks his fairly stock Maxima is something it isn't.

Super Stock refers to a very specific set of cars.
If you are not driving one of these, you are not "Super Stock:"

Super Stock (SS)

Chevrolet
Corvette C5 (‘97+)
Corvette C6 (‘05+)

Dodge
Viper R/T, GTS

Lotus
Elise (‘05+)
Esprit Turbo

Mazda
RX-7 Turbo (’93+)

Porsche
911 (996 chassis) (‘98+)
911 (997 chassis)
911 Turbo, 930 (2WD)
911 GT3
Boxster S (‘05+)