2.8 30v
#3
Search YouTube for "A4 2.8 __________" and in the blank, insert the model of choice (Milltek, Magnaflow, etc). I wouldn't bother with a full catback - it's very expensive and really doesn't make much power (a few hp at most). Get an aftermarket muffler, have it welded on, and call it a day. Try finding videos of the Magnaflow 14816 muffler - it sounds fantastic on the 2.8.
#5
exhaust
look up a vibrant axle back. thats what i am planning to get. heres a link for youtube http://www.youtube.com/watch?v=cwl_FLyyixU
#6
I make a shield now for the 2.8, not on the website yet but should be this weekend.
www.blinktekdesign.com
www.blinktekdesign.com