metra now makes a install kit for aftermarket radios for the 00-01 a4's now of course it come with an audi price but it is still cheaper and easyer then making one the metra # is 99-9105 i found it on egay but i also checked to see if it was real at metraonline.com just thought i would share my find.

http://cgi.ebay.com/2000-01-AUDI-A4-DOUBLE-DIN-INSTALL-KIT-N-R-NEW_W0QQitemZ270004507490QQihZ017QQcategoryZ50552Q QssPageNameZWD1VQQrdZ1QQcmdZViewItem[/URL]

http://metraonline.com