It seems to me that the easiest route is to use a Honda cylinder and Wiseco piston. Does your engine have an automatic decompressor? You'll need one, or you'll break the kicker shaft.
You could certainly fly-cut a Honda piston to work with a China cylinder, but it would be way more advantageous to use an uncut Wiseco. I might even have an extra cylinder laying around.
Another thought is to use a piston designed for a 200cc Honda Big Red. They had a 65mm bore. You cut fly-cut that to zero deck and have a nice day. The wiseco version of the Big Red piston is available in either 10.25:1 or 12:1! 8O
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Weldangrind
"I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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