tonymoroneyE53

Hi I have got a 05 E53 3lt petrol. just a biz set radio and cd player above it No phone Bluetooth module unfortunately. Have been told i can get a connector for it. don't know from where yet But I've seen sat nav / dvd players with blue tooth and steering wheel connection from ebay that have the " To Fit E53 " Has any body seen / heard about these and is it worth the gamble. Or other options thanks