alternator pully swap

Just to follow up for anyone thinking about using these old moroso underdrive pulleys.
First thing a person should know is that moroso makes two different alternator pulleys for the
old Mopar alternators.
Of course I obtained and installed the incorrect one first time around. Different year alternator case issue.
To remove the wrong pulley I just drill and tapped it so I could use a standard 2 bolt puller.
As far as taking the alternator apart it is just 3 case screws and removal of one of the field
brushes to put it back together. Very easy. No need to take these things to a shop like I thought.
I went to download the service manual for some tips but it was to large for my phone so I just jumped in.
As for putting the new pulley on I put the armature shaft case half in the freezer for a couple hours and boiled the pulley. Some light tapping with a padded hammer and it was on.
I spent more time sanding the sand cast finish off of them than I did actually working on the
alternator.
I never did find out what this alternators output is rated at. If anyone knows if there is a way
to test for amps I would like to hear about it.