I want to add Bluetooth to my 2002 X5. I have upgraded my radio module, navigation(dvd), and added sirius...but now I want bluetooth. I get sporadic responses from advancedautovations.com....and I would like to get this overnighted...is there anywhere else I could buy a kit and get it overnighted? Also...for those of you who have installed this kit....am I better off ordering a microphone from a dealer or ordering along with the bluetooth kit from AA?