Not exactly. There were 2 optional 'sports' packages above the regular Sports package. One was called the Sports Performance package and the other called the Sports Appearance package. You could get these packages separately of each other.WELCOME ABOARD!
If you mean the regular sport model, then the only difference will be a tighter suspension and the bigger 17 inch wheels. If you are reffering to the sports appearance package, well that includes the following:
1) Better Looking Sport Grill
2) Same side skirts as the CTS-V
3) Chrome Exhaust Tips
4) Tighter Suspension
5) 18 inch Rims
6) Bigger Better Braking System
The Base 2007 Model will give you the regular suspension and those awful 16" wheels.