I think Audi uses the same Red in all of their cars. I have a 2001 S4 and it matches PERFECTLY, not close, but perfect! It is the same color. Anywho... nobody makes a dash kit for the A\S4, A\S6, A\S8 so you have to make one if you put it in the dash. I am in the process of doing so... I wouldn't dream about putting it anywhere but in the dash!!! Someone did manage to put one in their trunk in an A4 - they got it to connect and think it was the CD Changer for the stock stereo. It didn't really take any commands, but when you press "CDC" on the radio, you hear the empeg, so the install is completely stealthy, but you don't get to see the empeg!!!