I don't have a lot of experience on alternator conversions, but I did convert to an alternator also. The alternator I'm using has an internal regulator, so you no longer need the stock regulator. My understanding is that most alternators have internal regulators. Classic Parts (Chevy Duty), sells a conversion harness with connection directions that is pretty simple to install. Also you can do a search on this forum, I got lots of great information and links from a couple of threads about this conversion.