I think that you are out of luck on the odyssey alternator idea....go to termpro.com and check out their forums....there is a guy by the name of dominic (or soemthing like that) that builds great alternators.....I was talking to one guy today who has a dual setup on his GSR.....300A!!!
Go to the electronics section of the forum and do some looking, you willl see what I'm talking about....seems like a much better alternative to the odyssey setup.