I have just bought a 2004 E85 and I'd like to upgrade the car with a Bluetooth console with Sat Nav, and I'm guessing the best option would be to source one from a breakers and it would I'm assuming mean the top dash which incorporates the screen, the unit itself and a compatible steering wheel? Excuse my ignorance but is it a later model that I'd be looking at or what this always an upgrade as such? Any experience or recommendations of sourcing, buying, fitting? Cheers... loving the car incidentally. 
