If you don't care about a 'period correct' alternator, do yourself a favour and switch to a Ford 3G alternator. Internal regulator and fans, higher output (especially at idle and low RPM). Mine was built for a 1995 Mustang V6 and is rated for 130 amps. Your pulley will swap over if you're running V-belts, though it may require a thin shim (mine didn't) so the pulley will clear the alternator case. Mounts are the same.
Here's some interesting output curves:
Some re-wiring is required, but the 3G is a big improvement over the 100 amp 1G large frame alternator that was there before. Lots of information available on the Internet about how to do this. Here's one source:
https://www.motortrend.com/how-to/in...r-older-fords/
