Know many people running front Chevy 60s as a rear axle. No modifications or special gearsets.
Pinion moves to other side, driveshaft also spins the pinion the other way when it gets turned around. Look up gearset for Chevy D60 gearset, there is no designation for front or rear because they’re the same.
I’m $100 into a Chevy LP center chunk, HP Ford probably fine as a rear but I’d rather not wonder.