Double frame cab and chassis with Paccar PX-8 engine, 20K front axle, 40K full locking rears on Air-Trac suspension, Eaton-Fuller 10-speed transmission, 315/80R22.5 front tires, 11R22.5 rear tires, 220" wheelbase, 148" C-T, 18' of frame behind the cab (controls from previous setup take up 20" but can be removed), wet line, and 4.88 ratio.