http://www.ibiblio.org/tkan/audi/radios/concert.jpg is the stock Stereo i have in my car at the moment and i was woundering if a professional shop would be able to install something like this http://www.crutchfield.com/App/Product/Item/Photos/Default.aspx?i=130AVHP400&g=168550 or just a double din in general i have read alot of the forums on here but i havnt found a clear answer and if a shop would be able to woudl it be such a custom thing to do that it wouldnt be worth it ? well i appericate the help thanks

Well your H/U is a single din, and the one you showed is a 2-din. It depends if you have that tray above your H/U. Otherwise, you're going to have to go single din, such as a Pioneer AVIC n-1,2,3,4.... Or somthing like that. Or if you have the $$$ a good shop can do anything you want.