Hello. Can anyone help please. I drive an Audi A4 B7 2.0 TDi S Line 2007 Saloon which is fitted with a plain ugly steering wheel with stereo control buttons. However, I want to change it to a Flat bottom steering wheel which apparently came off an Audi A3 8P car. The questions are, I’m trying to find a Flat Bottom Airbag to fit. Does any one know the part number for the Airbag and which place is the best to find one. Also with regards to the wiring for the Airbag What is required to allow the Airbag to function correctly. Thank you in advance. Stuart.