I looked into the factory nav for the H2 but from what I gather you can't listen to a CD or radio while running the nav DVD and you give up the 6 disc changer.
If you still decide to go this route make sure you check the code in your glove box for a compatible nav unit, you'll still need to have the dealer program it for you so the system recognizes it but it must be compatible first.
Besides, I never get lost
