I just purchased a HCB-300 unit online.

I assumed that the HCB-300 had everything I needed to install a bluetooth system that would also mute my radio and work through my speakers. From the discussions in the forums, I'm starting to doubt that. However, most everyone talks about the HCB-30, not 300.

I have a 2005 MCS before the phone MFSW.

Have you installed a 300?
Do you know if I need anything else other than the kit to get it to integrate with the headunit?
How would I hear the calls if it was not integrated?

Can I get the mic to work in the little vent area on the headliner by the sunroof button?
How do you, essentially, take the car apart to get the wires up there without taking off the windshield glass?

Thanks for any help!!