Having now sold my Audi the double din cage I bought when I planned on doing an RNS-e retrofit is now of no use to me! If anyone wants one for Ł30 delivered let me know. Its the genuine Audi item and will fit any A4 B6.
I've also got a steering wheel control module taken from my car when I retrofitted cruise control. Its the "N" version which enables the DIS function, subject to you changing the wiper arm for the one with the right buttons! They cost over Ł100 but i'll take Ł20 to get rid of it if anyones interested, and yes it is in perfect working order!