interchange

As far as the adapter ring for the convertor hub, you can try Pat Blaise Transmissions (206/365-1966) or [email protected] , although I have heard he may be closing up shop... maybe A&A transmissions? There is also a member on here who makes/supplies them, but I can't find his name in any of my saved references... There are undoubtedly more sources that people will chime in with. Or start a "Wanted" ad if needed.
Charlie S who posts here has the adapters as well as Greg O who posts over at .org