Possible Rupp? No clue

#1
Howdy y’all.
1st post, looking for info on on old mini bike I got from a friend a few years back. It has no markings or stickers, and nothing stamped or etched in the frame that I can find.
Has a 2HP B&S dated from around 1964 on it. No clue if it is original to the bike or not. It looks like it’s been painted in the past, to its current dark metallic gray color. Has a front fender, just not attached, as it was missing a bolt/nut.
Any info would be greatly appreciated, just so my kids and I can learn together.
 

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