I was looking for information regarding the original equipment on my CPO. I was unable to find anything on a forum search. Google search got me a link from Audizine that will help you interpret the build sheet in your car's spare tire well.
The link pulls up a decoder, but there's a tab on the bottom that lists all the 3 character alpha-numeric option codes.There are close to 10,000 code here!
Very handy little cheat sheet. Hope you find it useful.