I'm using the 60amp Denso, but FWIW, I used the OEM alternator brackets and added washers/spacers to get proper pulley alignment. It's a little tedious, but no big deal.
Mopar 1967-69 small block engine Alternator Mounting Kit 273 318 340
Thanks for all the confirmation/tips. I’ll connect the “sense” (fused) to the battery.
I was also considering utilizing the indicator light output. I can’t think of a good reason not to...