i have a bluetooth JVC usb receiver from the head unit in my 98 RX, i dont use it anymore because the car isnt drivable... but im not sure if it would work with your head unit. You would still have to wire up a mic unless youve got one integrated in the H/U. i was able to play music on my iphone through bluetooth and ofcourse answer and make calls from the headunit (without touching the phone)
might be worth contacting some sort of audio store to see if there is a dongle for your unit
If however, you do want something more fancy than just that, disregard my post

Goodluck
