The superduties went to CAN in 2005, so pretty much any 1999-2004 Superduty and I would suspect any other ford double din up to the body changes in the 2004-05 area. With the 2003-04 radios with the indash 6 disc changer, there is typically a CD-DJ feature to add another CD changer or hook up an IPOD adapter like PIEs.