I would rather buy a standard alternator with a internal regulator. You can get one for a 79 monte carlo and only have two wires. The charge wire and the trigger wire from the ignition switch.
google, "3g alternators", you can get these second hand from your local scrap yard cheap,
they usually come from Ford's in their mid 90's.
They have the 90 and 130 amp outputs, work great.