Should still work on a China Girl if you have a large expansion chamber with a rapid taper on the trailing cone. From what I have seen of the turbo charged 2 strokes that is how they get a strong pulse to hold in the boost for lack of a better explanation. What we need here is for someone on the forum to purchase one and have it delivered to my work address so my wife didn't see it. Then I will install it, probably extend the crank on the Magneto side for simplicity to drive it. I actually have a YZ125 expansion chamber already sitting there I will cut up and donate to the project. Then I will test it extensively and provide you all with the results. Please feel free to PM me for details on shipping.