Thanks for the pictures Scott!
Looks like a good solution for those that want tubeless but can't find the old 22.5 wheels.
From what I can see in the pictures they took a commonly available Accuride wheel with a larger bolt pattern, cut the very center part out that had the bolt pattern, and welded in a new plate that has the correct bolt pattern. Only way you would notice is the slightly larger diameter of the flat portion of the center with the bolt pattern in it.
If you get a chance can you check the rim, somewhere near the valve stem or same area but opposite side, for a stamped part number. Then I'll tell you what bolt pattern they started out as.
Thanks again for the pictures,
Grigg