Originally Posted by CBRich

The Sport Package includes a few pieces which may be of interest to you:

1. Aero Package: This can be obtained on it's own so it's a bit of a wash here.
2. Sport Brakes: These larger brakes will give you more full steam stops before fading. On the street these really aren't necessary but worthwhile on the track.
3. Limited Slip: This will help you put the power down coming out of turns and launching. Once again more use on the track than the street, but still handy.
4. SRM: This will rev match downshifts for you This is most useful when downshifting and powering out of a turn. It allows smoother engagement of the gear you have selected when you downshift.