[lordoftherings]

http://www.lltek.com/lux_a4_b5.htm - Carbon Fiber Trim Volvo, BMW, Mercedes, Porsche, Audi, Saab Parts Online - Sensors, Reservior, ABS Control Unit
As for the batteries, id say jsut go to radioshack and talk to someone there, thats what i did.

Here are some good links:
Audi Parts Super Store - Audi Accessories, Audi Parts, Authorized Parts Dealer
APR - Engineered Performance for Audi, Volkswagen, and Porsche Vehicles
AWE Tuning
JHMotorsports
mtm > Products > mtm - Product overview > Audi
MRC Tuning - Custom engine management for Audi, Seat, Skoda, Volkswagen
AutoSpeed Performance