Heavy Duty Trucks - Conventional Trucks w/o Sleeper, , Cummins ISX, , 500 Horse Power, Air Ride Suspension, Aluminum Wheels, Wheel Base, 24.5LP Tire Size, Tandem Axle, 3.90 Ratio, FOB: VT We are available to answer any questions. Monday-Sunday 8a.m. to 9p.m. EST