Hi, Im a newbie to A4 but not Audi since I had a S3 APR,d some years back. These days my requirements are somewhat different so I have a b6 avant sport 1.9tdi for about 2 weeks. Im on the upgrade route for DIS , RNS e and so on. I have searched the forums for DIS stalk part no,s but now confused as was the parts guy at the stealers, well actually he wasnt interested ! I have figured I need a A4E0 953 503c or A8E0 953 503c (looking used) but are these one and the same, will either work ? Any info would be gratefully received.