The original alternator on my 67 Coronet is getting a little tired and probably won't support a headlight or electric fan upgrade in the future.

I've read up on all of the upgrade paths, and I just want something that doesn't force me to mess with brackets or a bunch of wiring changes.

Is there a factory alternator I can install that will work with my 67 318 (iron water pump and timing cover) that will support a single big electric fan and/or upgraded headlights in the future? What are brands to look for if I want to go with a new-reman (junkyards are slim to no pickins around here)?

I don't mind running some wires underhood but I'd like to keep the ammeter operational if I can.