Racing Line performance strut tower brace- i have one and makes handling better and cornering.
Crab Intake- i have one and love it, awesome sound and performance
GT-R exhaust- I just ordered mine and heard lots of good reports about it.
Check out the pictures of my car and that might give you some cosmetic ideas.
hope these things help
Pontac G6 Sedan 3.5L
Exterior- 8000k HIDS lows, 8000k HIDs fog lights, 20% window tint, Tinted taillights, painted grilles (top and bottom) to match, Custom painted engine cover and battery box, Red painted calipers.
Performance- Crab Intake, Racing Line Performance strut tower brace, GT-R Custom Magnaflow exhaust.
Interior- red LED's on inside, custom painted interior trim to match outside, Memphis sub and Amp, Custom fiberglass sub enclosure.