67 Barracuda Heavy Electric Load

The previous owner mentioned that the alternator was recently replaced and is high output. Any idea how to determine the specs/health of the alternator? There is a picture of the alternator above and I did not see any other markings with various angles using my camera. I will pull the alternator off and look it over more carefully if it would be helpful.
You can take the alternator off and take it to an auto parts store and have it tested. They can tell you if it’s indeed charging, and the amperage of the unit.