If its time for a top end & you have no compelling reason to stay at 200cc, then consider sending your cylinder & head to Eric Gorr for 'The Treatment'. He can take it to 225cc, along with some porting enhancements that raise the entire power curve. I don't know his price for that work, but I understand it is at least competitive with the cost of a new 220cc jug from Kawasaki. And there would be no comparison in the power, I'm sure.
That's what I plan to do, once I need a top end. :thumb: