The guy who has it does not have a motor yet, so he can't test fit it. I know I can get this one
to work for me, but not sure about him.
For anyone else with the Headpipe question here it goes.
Both Kawi and Yami headpipes could possibly fit in any ski, but the only way to know for sure is to mount it. Also, color and screw count do not matter. The Kawi Headpipe has a taller flange where it mounts to the manifold, and has more of an angle where the chamber mounts. I am not sure if the Yamahas are the only ones with Factory B Pipe, but the Kawi one I have does not have it.