Do yourself a favor, and get an alternator with a warranty. I know, theyre pricy, but they go out so easily. I got one from auto zone, and although it was rebuilt, you cannot beat a lifetime warranty.

You will kick yourself in the ass if you go out, get a used alternator from a 1g for $40 and it dies in a month. Ask me how I know.

Is your PS pump leaking? Few things will kill an alternator as quickly as PS fluid leaking on it.