It's easier if you place something smooth under the back of the car so you can slide the axle around without taking all the paint off. I've used an old tarpaulin before to drag it into position.
Once the front end of the torque tube is hooked over the rear cross member, lift under the diff housing with a trolley jack to align the spring pin holes with the springs. Keep a couple of screwdrivers at hand to pop through the spring pin holes and keep it in position.
Once the front end of the torque tube is hooked over the rear cross member, lift under the diff housing with a trolley jack to align the spring pin holes with the springs. Keep a couple of screwdrivers at hand to pop through the spring pin holes and keep it in position.