An easy way to remove rear brake drums without damaging them is to jack up one side. Block the other side well. Remove the wheel that is in the air, but replace the lug nuts on to the studs part way. Now the tricky part. Start the car, release clutch slowly while pulling up on the handbrake. Note: This will result in dangerous forward motion if posi-track equipped. The heat induced in the drum while turning will expand it enough to slowly work its way off the rusty hub and will stop at the lug nuts if you remembered to put them back on. If not, the wheel cylinder pistons and shoes will remove themselves automatically.