Hey, I have a BMW 320i E46 with the standard business radio with front loading CD and rear CD changer. I also have steering wheel controls. I want to integrate my iPhone. I already have an iTrip and use my phone for navigation but during calls i just can't hear the people on the other side since the speaker sucks. I want a bluetooth kit but don't know what is best. I would prefer integration with the car as it already has buttons for answering calls but I'm not too sure how the OEM kit works. Do I just get BMW to install it? And can it work in conjunction with the BMW iPod kit?