i'm sure the late model 60s would work OK but you'd be ignoring a lot of tribal knowledge to put big tires on ball joints and unit bearings.
for all the money you're going to put into a Dana 60 with wheels, link system, locker, seals, balljoints, bearings, driveshaft, etc. do you really want to risk it to save a couple hundred bucks?
FWIW i picked up my 89 Dana 60 w/ Kingpins for $700. It was stripped down and didn't include a carrier, rotors or lockouts but had everything else. I wasn't about to sink thousands of dollars into an axle that may leave me looking like this on the trail: