Hi, I',m just starting to investigate myself. I have a 2008 Expedition Limited EL with the Navigation audio system and Sirius.
My assumption is the phone must be bluetooth enabled.
As far as attachments go, I'm not sure, but on the Ford Accessories site for Expedition they do have phone attachments.
http://www.fordaccessoriesstore.com/fas/b2c/catalog.asp
I'll let you know if I find out more, but I'm in no rush. I'm looking to have it installed by March. If you come up with any info, I would appreciate it if you pass it on.
