Yep, just like posted above the K9 is the only engine made in Taiwan. The easiest way to tell is by looking at the carb on any of the other engines, they are clearly Novarossi carbs. If you like how that engine runs the WS9 is basically the same engine but it now has a turbo head button, as well as the MES exhaust design that is on the B9/C6 engines. It has a little more power and gets a little better fuel economy.