Tint Windows / Tails
Ignore the headlights, if you want custom go retro (http://www.grandprixforums.net/04-pr...fit-36506.html)
get wheels/tires (http://www.grandprixforums.net/got-s...ere-29622.html)
read before purchasing so you know what to look for ^^^
Buy SE Lip
Buy SPO Grills
Lower
in that order if you just want appearance mods. It will set your car apart the most. A hood and 4x4 stance with aftermarket wheels will not look as nice as a clean flush low wide stance will.
Example
Stock
Mods I listed (minus the retro headlights)
Notice the lip on the bumper. It is subtle, but makes a HUGE difference. ^^^Special Edition Lip, a little pricey, but so worth it.
And for the love of GOD do NOT consider a body kit for the car, simple is clean, clean is king