You probably got the Performance Tire and Wheel Package. It consists of the 20" sport wheels and the larger brakes as standalone options. Although, you have to realize that some items are very easy to install onto a base model vehicle.
Do you have a heated steering wheel? Are the front seats heated and cooled or just heated?
To know your package options with some certainty, we'd need to see pictures of a few key areas. Or, option 2 - I can't verify the accuracy of this recommendation to 100%, but - you can also buy your vehicle's Monroney sticker from
www.monroneylabel.com, where it gives a "car dealer window sticker" specific to your VIN.