I have searched the Forum for information and im lost completly, The car is a 57 plate (8P)S3, I currently have the RNSe (8P0035192 Q) with Bose, 6 Disc changer in the glovebox, phone prep cradle in the centre armrest and multifunctional Flat bottom steering wheel. I want/plan to upgrade to the RNSe (8P0035193 G) and removing the 6 Disc changer for an AMI unit (8T0035785 A), So what I would like to know is, - Is this possible with the part numbers I have? (If not, what parts to I actually need) - What else will I need to get this working other than the coding? (Wiring etc) Cheers in advanced for any help in what I see as something that has more than likely been discussed before!!