How do you replace rear end seals to a 1968 Ford Fairlane 500?

To replace the rear axle seals, lift and support the rear of vehicle, remove the tires, remove the drums, remove the nuts holding the bearing/seal retainer in place, install the drums backwards (that's right, backwards) and secure drums to axle flange with two or three lug nuts, using a large hammer, tap on the drum as to force axle/bearing assembly out from the axle tube, take the axle assemblies to a machine shop to have the old bearings and seals replaced then reinstall the assemblies back into the vehicle. Unfortunately the original bearings have to be destroyed in order to replace the seals.