Apparently the truck has well 100k on it, but a dead battery so he can't check right now. It was government owned, so hopefully maintenance was reasonable.
Looks like it wasn't wrecked as badly as I'd been thinking:
He still doesn't know what he'd be able to sell it for, and is looking into that. The toolboxes are being removed but the rack will likely stay. When I'm done with it I'll probably spent a week selling easy parts and then take the rest to a junkyard.