Chasing some gremlins, low idle voltage at noght with headlights and fans on, have the stock 65 amp 2 field alternator.

Between the headlamps, electric fans, efi, and ignition, I am probably real close to that number. I would lie to know:

what is the rating at idle of the more common modern alternator swaps that you have done?

Which is the easiest to do?

Do they have a press on pulley? or is the shaft the same dia as the std mopar unit?

thanks