Low output at idle w/ac on?

mopower76 said
While driving with the AC on or any other accessories playing at a stoplight the voltage drops down below 11.
While driving, it’s putting out 13 to 13.5 V.
I guess my main question is is there an upgraded alternator that will bolt on? I know I’ve used high output Police spec alternators in the past and smaller Denzo units on engine swap cars over the years, looking for quick easy over the shelf and reliable with high output at idle!

Thanks for helping in advance!

Murray said
Alternator should be putting out about 14.4, you are low. Do you have a square back alternator with electronic VR? This should work well at idle. Sometimes we can cheat a bit by turning up the idle a little.

I have noticed the same thing in my '70 Charger. The engine side harness was replaced 11 years ago. I did the MAD bypass and changed the instrument panel to a Dakota Digital with a voltmeter.
Idling with the A/C on, headlights and foot on brake put the voltmeter below 10 volts. I have the stock 60+ volt squareback with the stock type electronic VR.
I would just default to a Denso alternator but I don't know if they came with dual groove pulleys. I'll check with RockAuto and report back....