Alternator recommendations? (and other very noob question)

Rusty is correct.

There is a member on here that goes by name Crackedback .

He is an extremely knowledgeable person on headlamp systems and how to properly adjust them.

I bought his relay controlled H-4 Headlamp system for my 68 Barracuda and it works "brilliantly" (great place to use that pun LOL !! )