Conventional with sleeper. 62 in Flat Top Sleeper; 15L Cummins Engine 450 hp; 10 Spd OD; Engine Brake; Air Ride Suspension; 3.55 Ratio; 22.5 Tires; Aluminum/Steel Wheels; 220 in Wheelbase; Tandem Axle; NICE WORK TRUCK, CALL GEORGE BUSBY FOR INTERNET PRICING.