Yeah as pointed out Graham think the dealer is getting confused to the point that even some dealers haven't heard of the Bluetooth Kit. Everything is already rigged in the car (mic and speakers - uses the stereo ones and mutes the stereo when phone is used.) The bluetooth modules takes 10 seconds to fit and your then ready to go. Takes a few minutes to store the names and numbers.
Have heard that NissanGB are out of stock at the mo but Holdcroft still have some available.