From wikipedia
The Ford F-650 XUV Super Duty are medium-duty commercial trucks produced by Ford Motor Company by a joint venture with Navistar International. They were introduced by Ford in 2000, replacing the previous-generation F-600, F-700, and F-800 trucks introduced in 1980. They are made mainly for use as utilitarian trucks for towing, heavy hauling, use in construction and are intended to appeal to businesses and municipalities.[1] They are mainly Class 6/7 trucks, but the 2011 model year F-750 has extended its reach into Class 8 with a GVWR of 37,000 lbs due to frame and chassis upgrades.
The F-650 and F-750 are manufactured in Mexico in a joint venture with Navistar International and Blue Diamond Truck Company LLC. The Ford trucks are built in a Navistar factory with an International truck frame, using Ford cabs and non-International engines (Caterpillar and Cummins diesels; Ford gasoline). With Ford discontinuing the Econoline for 2013, Ford has announced production of the F-650 will transfer from Mexico to their Avon Lake, Ohio assembly plant that formerly built the Econoline.