Can I lift the rear with shackles?

My cousin had 67 sport fury. To gain some height he flipped the Axel over and bolted it under the springs(like a pickup) The bumper was above my waist. But the kicker was he had one forward gear and three reverses!! No ****! My Dad warned us, we thought he was full of it! When that thing shifted in reverse I pissed my pants laughing!