Stop in for a cup of coffee

Strange. How come I dont get alerts when I'm called out? Maybe tommorrow?
@ZMan67S See what Ray thinks. @halifaxhops
As far as I can tell, it is possible to improve the output of the lower rated alternators.
The trick is finding someone who really knows these alternators on several levels.
From looking at the parts books numbers and such, it looks like the lower rated alternators had rotors and stators with less windings in them than higher rated versions.
They also might be able to better (custom) fit the rotor to stator so the magnetic field is closer to the stator - but not contact.
But you have to know what you're doing. More windings might need more current to get a good magentic field initiated. It also might need thinner wire, which in turn could fail sooner (heat issues).

There's at least one alternator restoration place that seems to know a lot - maybe they know the differences internally.

Did 67 'verts get a higher output alternator to begin with?

I was looming at a kit to make the 37 amp into a 70 or 80. Came with a larger stator so it is definitely possible. The Delco the definitely can be modified the wind generator is a delco with a pm rotor and larger stator.