Ford F350

The Ford Super Duty is a line of trucks (over 8,500 lb (3,900 kg) GVWR) introduced in 1998 for the 1999 model year. The F-250 to F-550 Super Duties are assembled at the Kentucky Truck Plant in Louisville, Kentucky. The two-wheel-drive and four-wheel-drive model frames are the same in the F-250 and F-350 series, making conversion from a two-wheel-drive model to a four-wheel-drive model less difficult than in other truck models. F-350 chassis cab, F-450 and F-550 frames are the same between the two-wheel-drive and four-wheel-drive models, and use the same suspension.

Information provided by: http://en.wikipedia.org/wiki/Ford_Super_Duty#First_generation_.281999.E2.80.932007.29