How about making a series hybrid? The Norton motor powers a
generator/alternator that powers an electric motor in the rear axle. Or
one electric motor in each hub and no axle. You can get AWD if you go
with electric motors at all four wheels. Throw in some batteries,
charging circuitry, and regenerative braking if you're ambitious.

Didn't answer your question, but you could dispense with the tranny
altogether.

--
Ron DeBlock N2JSO
If God had meant for Man to see the sunrise,
He would have scheduled it later in the day.