Very nice looking motor. As for enhanced BT, you could code it yourself if you get hold of Esys and an Enet cable, or try to find someone with one. It's a 5 minute job but it is weird that you have pro nav without that - I thought it was a standard thing but I'm probably wrong.
Also, while I'm here, could someone with NBT do me a favour? I currently have no display because I'm an idiot and broke my display cable, but my unit is still working. I can still use the radio by pressing the radio button and using the scroller on the steering wheel to change station. But I can't remember how to switch to external media then USB off the top of my head. I can press the media button which gets me to the device selection but I can't remember how many clicks down I need to go for USB
Would just be good to get USB audio on the go again until my replacement HSD cable arrives. I think I need to press media then scroll down twice to get to external devices but I can't remember where USB appears in the list or if external devices is even two options down.