This is how I got it. Only thing it was missing was the air cleaner housing.
I have 2 in original condition and yours looks like a very original one too ... someone added a shutoff valve for the fuel and I see an added set of pegs on the brush guard ... the carb looks like it has a "gold" float bowl, kinda hard to tell, might just be dirt.
Here is a pic of our Hilltoppers out on the town ...
We registered them as mopeds added all the street legal gear, the orange flags are for safety.
If your going to ride it often and hard there are a couple weak spots ... 1 is the jackshaft, they wear where the bearings ride. Shake the shaft, if it moves its worn.
The other is the cat99 driven and driver. They may be worn with weak springs, while they will work they may not allow the motor to do its work in the right RPM range ...
We ride our bikes very hard so it was an issue, if your just cruising the streets you will likely never notice.
A series 30 TAV will fit with some adjustment.
Use genuine comet belts, Chinese belts are not so good so the people on this site have said.
Chinese TAVs are good, Comet TAVs are the best.
Nice find!
By far the most comfortable Adult mini bike I have ever ridden.