Clean cab and chassis with Allison automatic transmission, 20K front axle, 46K locking rears, Chalmers suspension, 425/65R22.5 front tires and 11R22.5 rear tires, 254" wheelbase, 170" C-T, 21'6" of frame behind the cab (20'6" of frame behind the muffler), and 5.38 ratio. Truck has both REPTO and 8 bolt plate on the transmission.