These are the original specs, previous owner may have made modifications or upgrades: 22.5 Tires Dual 50 gallon fuel tanks Roof clearance lights 7-pin trailer wiring Painted Tank Shields Certified Rear Receiver Hitch Trac Tech Full Time No-Spin Differential C-Brake by Jacobs Roomiest Cab in its class Heat & A/C system Power Door Locks Dual Power Heated Mirrors Bostrom Wide Ride air ride seat pedestals Air Ride Cab