Thanks for the response, @Socalm3W. Makes sense in your case to wait. If you have the Centa coupler, you just need to buy or modify the rotor and cut the bell housing, or so I gather. That would be the greater cost for me, given that I'd have to have a shop pull the motor and do that work. Though I'm far more taken with the exposed S&S twin, I gather that the Super3 doesn't pose such a problem given the nature of the engine.