Yeap. Im waiting on my 66cc motor to get here and Im going to tear it apart and blue print it. Im going to design a porting template and try and get a good bit of power off these motors... I expect I might be able to get up to 15 horse with the right amount of work.
Im thinking I might be able to machine 2 extra boost ports into the cylinder, lighten the flywheel, and change the duration of the transfer, intake, and exhaust ports, machine a center fire head with good squish and small cc combustion chambers.
If everything goes right, I'll do this for other people as well.
Edit.. anyone know what these motors hitpeak RPM at in stock form? 8 or 9k?