One of the other things you can do to get more info on your car is to find your RPO list.
It'* a list of letter/number codes on the underside of your spare tire cover in the trunk. It basically enumerates every option that the car has. You can find a translation for most of the codes in the Techinfo section.
Or you can post a picture/list of your RPO codes here, and we'll break it down for you.
Also, this is pretty much a must-read for you naturally-aspirated guys: