Alternator overcharging

Not sure an alternator can overcharge. The voltage regulator's job is to limit the voltage it receives. Sometimes you will find a bad VR, but usually you will find it is not grounded well enough. I typically run a new ground wire rather than relying on VR to body ground. Also, virtually every Mopar I own had worn VR mounting holes and the VR doesn't mount as tight as I would like.