Just a quick update following my DIS Cruise posts to flash my double din and rns update.
Managed to find a 2011 seat RNS media E unit (the A3 mk2 unit but with the a4 faceplate) on t'bay for a very good price
bought the 805c dble din cage from lincoln audi, an ebay PNP lead and gps, a k'nackered dble din ashtray from t'bay £10) fitted with a new soul black lid (£15) and after several hours bashing and cussing here it is...
have also put a b7 'bm' CC dble din unit in and about to install demist relay. Heated seats (ummmm recaro's!) are on my long term wish list...
You can buy the "Audi Navigation System" screen surround (for £12 not the glossy one) to make it identical to the a4 'look' - not bothered about the chrome buttons as I think they scream mk2 to any stealers.
I have full DIS nav display (red not colour) and this usually picks up if I launch the nav when running (occasionally have to power the RNS unit down to remind the car it is that old!).
Please excuse the marks on the centre console, I just got a bit over excited when it worked. And the gear trim needs plastikote or replacement..