I have a job1 F350, and had sync installed which didn't work even after the radio was upgraded due to software incompatibility with the older trucks. The dealer recommended having it removed due to the trouble I was having. I had sync removed and installed mobile-ease which is a Ford product and will be warranted sync won't.
It works just like sync with the major exception being you have to manually download your address book, and it wont work your ipod. Pairing the phone for hands free operation was easy. Music is automatically muted when making or receiving a phone call and it comes through the sterio speakers. I have no complaints with the system.