Alternators, what are you using?

[skid]

I've got all the bracketry off of my engine while I am waiting for my new power steering pump, and am thinking of changing/upgrading my alternator. I have heard that keeping the external regulator while up grading the out put of the original alternator is a good way to go. Anybody else do this? Is there a better way to go?

I would like to have at least 100 amps, and use the original harness (or at least parts of it).