Wiring (Charging System)

I'm not sure on the alternator but from what I've been reading most people are using an external regulator. I see most gen 3 hemi's are wired this way. I was just hoping that the PCM had the ability as well so I don't need an ugly regulator.
Riddler

The factory PCM regulates the voltage. Not sure how the aftermarket controllers work that out.
Factory PCM also grounds the starter circuit eliminating the need for starter relay.