Here are a few of the latest kit from mingsinternational on ebay.
Looking decent upon teardown, usual damage on main drive gear screw. Not too much debris in the case.
The cylinder has the large exhaust port, but as usual, it's completely wasted due to the gasket being so small.
Cylinder plating looks good and the head has decent machining.
If more is better, then too much is just enough.
If you can't afford it, build it yourself.