Where can I find good deals on G-6 performance parts. IE...Rotors, Air system, gauges...etc.

A good start is to look through the supporting vender list.

http://www.g6ownersclub.com/forum/forumdisplay.php?f=187

COOL! search button here is really very handy! looks like PartsForYourCar.com is the best place to buy pontiac performance parts (http://www.racepages.com/accessories/pontiac.html) since it has many threads compared to
Lexani Wheels, Discount Tire Direct, CARiD.com and Southwest Wheel.

http://www.andysautosport.com
this site has tons of things for any car, just search for your car and it'll give you lists of parts.

thanks buddy! i am using it now. it is really complete. thank you again for sharing this!

These sites are very good. Thank you very much! :D :beer:

I got my rotors here: http://www.r1concepts.com/
Intake here: http://www.crabintakes.com/
Gauge face here: http://www.blackcatcustom.com - MPH Versions and http://www.blackcatcustom.ca - for the KMH Versions
My exhaust is made by these guys: http://www.classic4performance.com/
Wheels & tires from these fine folks: http://www.discounttire.com/dtcs/home.do
My Ram Air Hood from Eric here: http://www.mpd1.com/content/pontiac.html
Headlights from: http://stores.ebay.com/SABERSPORT
Various bulbs: http://www.autolumination.com
HID's: http://www.ddmtuning.com
Tune: http://www.whiteautoandmedia.com