ok good point guys, you could use a ratchet or tow strap to hold it up then from one rail to the other, we did dad's 86 that way but only after the motor was out we used the ratchet straps on the bellhousing holes and then used the brake booster and a/c box to hold it up. Frame would work better.
2nd, get ya some wedges of wood or maybe a strap and bolt that fits the torque converter, use the wood wedge between the Tc and the bellhousing, or use the strap/bracket bolted to a bellhousing hole and then a TC bolt in the Tc to hold it from falling out.