Frank's suggestion of using the alternator has merit. My sense is that while Forum members appreciate and enjoy their rides, most of us are not married to things being production original.
Updating things whether it is swapping out Loadomatic distributors for newer units with centrifugal & vacuum advance, switching from distributor ignition points to electronic modules, or swapping transmissions is done to make the ride more trouble free, hassle-free, reliable, and enjoyable.
My recollection is that generators do not charge at engine idle while alternators do. Unless you are involved in concours competition, what advantage is there to using a generator instead of an alternator?
NoShortcuts
a.k.a. Charlie Brown
near Syracuse, New York