I assume it could be done, the BT stack is in the head unit itself, and there is a microphone placed in the car....i guess you would need a new head unit then also. Might be worth considering 3rd party head units as their bluetooth capabilities are generally better (can read text messages, better GUI etc)
Hey there rafster
Thanks for the reply. I have checked the 6000CD that is installed and it has a BT on/off option in the menu but I dont think it is actually installed so I assume its a plug in unit at the back.
I reckon you are probably right about an after market unit, that way I can fit BT and a sat nav with one head unit.