Hi. I have a B7 A4 with a Symphony II (6cd changer & tape deck) installed. I'm about to receive delivery of a 2011 RNS-E (which I understand is an A3 unit with a faceplate). Which adapter or harness do I need to complete the install? I intend to get OEM bluetooth fitted in a few months time, so is there a single adapter out there, or do I need more than one? I do not have BOSE either, but I have a MFSW, and the RNS-E delivery will include a GPS antenna. Oh, and I also have VCDS.