Quote Originally Posted by blowfishRus6 View Post
04 and 05. usally has a little badge under the gtp logo that says compition group. physical differances are 17' wheels and red calipers. the only diff that i know of from a regular gtp is 3.29 gears, stiffer suspension, and paddle shift

. Tap Shift
2. Magnasteer II
3. HUD
4. Performance Tuned Suspension
5. Light weight Machined Finished 10 spoke wheels (could be upgraded to 5 spoke wheels Curved Chrome in 04 and Polished 5 spoke wheels in 05)
6. Red Brake Calipers (brakes are the some of all 04+ GP)
7. Stabilitrak Sport
8. Competition Group badge on the trunk under the GTP badge PN 10342485
9. Comp G badges on the doors (late 04 and all 05's have these) PN 10350911
10. 3.29:1 final gear ratio
11. P225/55VR17 Performance Tires
12. 5 button DIC
13. 142 top speed limit (126 for GTP's without Comp G)

RPO code was WS6 and was only available in 2004 and 2005 and could only be added to GTP's.