If what you mean is reinstalling the engine and tranny bolted together into the engine compartment. At the same time trying to sliding the ball housing onto the torque tube without unbolting the ball housing from the tranny.
If this is what you are trying to do, I would say it can be done by rotating the ether the engine crankshaft or rear tires to line up the rear yoke splines inside the ball housing with the propeller shaft.
If you rotate the engine crankshaft take out spark plugs and put the tranny in gear so the tranny main output shaft/rear yoke will rotate. The rear tires will keep the propeller shaft from turning or in place until the rear yoke splines are lined up.
If you rotate the rear tires to line up the propeller shaft to the rear yoke splines, put the tranny in gear so the main output shaft/rear yoke cannot rotate.
The problem is, the rear yoke bushing is at the end of the torque tube, once you pull the engine and tranny out, the rear yoke falls down onto the ball housing. That has to be somehow lifted up, to line up the splines. It is probably easier just to remove the ball housing, line up splines reinstall ball housing. The end of the propeller shaft is beveled, which can help coax the rear yoke into place.
You can pull the engine and tranny out, bolted together without removing the ball housing, the ball housing will just slide off the end of the torque tube. Reverse is a little harder.
