It was Kuwahara's low end bike, hence the F&F does'nt look like a normal Kuwahara.
There were two versions:
1) Kuwahara Scamp
2) Kuwahara Scamp CB
I think the CB model may have been 4130.
The Kuwahara Hopper replaced this model.
I'm sure other Kuwahara experts will be along if they know anything.