thanks, everyone, for the suggestions. I see that this forum is full of hoarding enablers.
I've got to price out the cost of the steel for building the flatbed myself, and then compare that to the time to cut the existing one down.
I should have mentioned, too, that part of my reason for wanting to replace the doors is to covert over to manual crank windows. My front window motors are pretty shot, especially when it's like 20 below zero around here.
I've got a couple other parts possibilities to check out in the next few days, so I should be more or less making a decision on this by the end of the week. I've got 15 acres, so I've also been mulling over some wild ideas about what I could do with the 350 and man trans and chassis on the dually, if I end up buying it.
dmanual crank window, anf