I was looking at swapping my factory satnav from my BA xr6t to my new BF F6, but I found out it cannot be done easily. The factory satnav's have a different wiring loom and also the
ICC has different plugs.
I know there is a Blaupunkt unit that can be fitted to the
ICC, but it is not the same as the factory unit.
After having the factory satnav and also having a streetpilot C320, I can agree with the other comments about the factory unit being very dumb and very expensive. You are much better getting a portable unit that will do many more features than the factory one.