2011 Ford F-550 Dump Truck

2011 Ford F550 4x4 6.7 Diesel motor. Truck has power windows, locks, mirrors. A/C works. Truck has served the town as a plow truck it's entire life, so it does have some rust and minor body damage. Everything works as it should. Transmission replaced with a remanufactured transmission from Ford at 63,000 miles. PTO pump and transmission cooler also replaced at 63,000 miles. Numerous other repairs done to truck by Ford to include DEF heater, rear main seal, valve cover gaskets. We have done ball joints, wheel bearings, sway bar bushings. Truck runs and drives as it should. Rear brake calipers and pads  just replaced. Truck has been garaged since new, but water was found to be leaking into cab, presumably from rust around cab lights. We have since sealed around the cab lights as well. ,