Anyone know what these wheels might be from?

#3
Yes, I know most Trail Horse minibikes have 6 inch wheels. That is why I am asking what these might have come from instead of a Trail Horse. The GTO 100 and 200 look like they came with 5 inch wheels or are they 4 inch wheels, hard to tell from the picture. It would explain the mount on the other side of the rear wheel being for a band brake drum.
 
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