Ford F350 Box Truck

1994 Ford F350 box truck. It was bought by the store about 4 years ago and never really used. It has the 7.5L Big Block V8 with auto trans. All 6 tires have less than 4k miles on it. Battery is newer, plugs, plug wires, cap and rotor replaced, brake lines replaced, new fuel lines and fuel pump. Runs and drives, doesnt burn any fluids. The bad... its got rust, small leak in the box, gas gauge doesnt work. Only reason its for sale is because it doesnt get used. So far in 2017, its been on the road 6 times. With all older model uhauls, its got higher mileage. Currently at 195k. Its a 14ft box.