Ford 5.4 L Liquid Propane Gas (LPG) Engine, 2011 US EPA Label, Automatic Transmission, 4050 lb Front Axle, 7800 lb Rears, 10000 lb GVWR, 225/75R16 Front Tires, 225/75R16 Rear Tires, Spring Suspension, 176 in Wheelbase, 17 ft x 94 in Wide x 85 in High Body, Curbside Door