Dana 50 is like the Dana 44 except the rotors & hubs are two separate pieces instead of just one....remove Your locking hubs, pull a couple snap rings and slide the hub & rotor off. I have a 1" dia X 10" long brass bar that I used to beat the lug nuts out of the hub then beat the rotor off the hub. Set the new rotor on the hub and carefully line the rotor up with the hub and install the lug nuts and beat them back in solidly. Some people say You have to have the studs pressed out and the rotors on & off but with care and wire brushing & filing the mating surfaces for rust & burrs I have NO run-out of the rotors. DO NOT hammer on the braking surfaces of the new rotors. Use a soft pine board and lightly tap them on.
Install new grease seals in the front hubs, repack wheel bearings, repack lock-out hubs, install snap rings, install hub covers, install brake pads, install front wheels and Your done.