Alternator Options

I would swap to a Delco 12si, great alternator, not too hard to fit.
http://www.forabodiesonly.com/mopar/showthread.php?p=1480334

You can get stock ones in 78 and 94 amp, which both charge well at idle. Powermaster makes a 150A version that's well priced. You won't have to have your firewall mounted regulator anymore, and if you have a failure you can grab one at any parts store. They come apart easy, easy to swap to serpentine if you wanted.

So far my 78 amp has done well with high draw electric fans, but since I will be adding EFI as well, I may need to go to a larger one.