I would use an updated alternator that puts out at least 100 amps. Far more than the original you have now. I would guess you will run dual electric fans and perhaps and electric fuel pump that will need some power.
Just google "Ford one alternator". Lot's of choices for a nice 100-135 amp 1-wire unit that will bolt up in the original brackets.
Just google "Ford one alternator". Lot's of choices for a nice 100-135 amp 1-wire unit that will bolt up in the original brackets.