Voltage regulator upgrade? Keep frying voltage regulators with swap

When searching the Denso part number, I ran across this site, that says externally regulated:
http://www.spidermarine.com/showite...% NEW Nippondenso 12 Volt 160 Amp Alternator


Same thing here:
Reg Location: external
[ame="http://www.amazon.com/ALTERNATOR-CHRYSLER-SERIES-MAGNUM-CHARGER/dp/B007COSQCQ"]ALTERNATOR 05-07 CHRYSLER 300 SERIES DODGE MAGNUM 06-07 CHARGER 2.7 3.5 5.7 6.1 : Amazon.com : Automotive[/ame]