Hi, I've been reading all kinds of info on this site regarding the install of the AVIC-F90BT (or sister units) in an A4. Since I have a convertible with the Bose, is there a simple grocery list of items that I need to make this work? I have factory XM, but keeping it is not critical. But if you know how to make it work with this unit, please let me know, as I haven't made up my mind. Would I need to cancel my current subscription and start a new one? I want it to look as good as possible. I plan on giving the instructions to my local installer, who I suppose will be Best Buy. They've do
