Looks like a tree fell on the roof and they cut the door top off to open it. They also banged out the roof enough to still use it around the farm. Did they save the door top. easy fix if they did.
I suspect it probably runs since they went through all the trouble to get into it using the drivers door.
If you can use it than buy it. Don't make it yard art. These trucks know how to work.
Looks great to me! There should be a lot of doors in your area with rusted bottoms if you need a top. The tin on that truck looks excellent. I have grill bar envy from what I can see of them. Original ford script stakebed too makes it all the more interesting. Now go out and retrieve that thing.