That looks like a regular, but chromed, dual field Mopar alternator.
I've got 2 of them aswell with the 'one-wire conversion', only not chromed.
Just hook it up with a nice thick wire and you're done.

Coincidentally one of my alternators ate it's rear bearing (also?).



If you want to replace it with a regular (dual field / Squareback) alternator, you'll need to install a matching (later style) remote voltage regulator.