(Working on getting a M-1009 CUCV sometime very soon.)
They built those not very far from where I live in WI. At Oshkosh Truck. They are not very comfortable. But O.T. did a lot of structural and durability tweaks to get it to mil-spec. For one the diffs are sealed up real nice. A buddy of mine had one I loved that truck.
I don't know how many times i told him he couldn't do this or that with it. Or your gonna mess that up. And how many times I said I wasn't gonna help pull him outta something i thought he was getting into. Lets just say i never had to pull him out of anywhere and he always made it home from the mud-hole. Good Tough Beater!