Tint the windows
Get some 18" wheels
Get smoked Hella Tailights
Get Magnaflow 3" tips (Angle Cut, Double Walled)
Do the "Nene" Fog light Mod....check out
www.audiworld.com for this writeup.
Replace OEM fogs with PIAA Super Plasma's...they match the HID much better
Get a lip spoiler installed
You'll be set apart from the crowd while still staying classy.
Then...really open your wallet and go for the engine/perfomance MODS.
If you want the look of an RS6, then buy one. These kits to make your car look like something its not is stupid and a waste of dough...my .02 cents...