Originally Posted by Lightholder's Dad
This makes me think that there may be considerable strain, especially upon braking, on the torque tube and unless the splice is robust, you may have failure there.
Perhaps the engineer types might have some thing to add.
Kent
That makes sense because, there was a company that made some kind of support Picture 1 , Picture 2, Picture 3, Picture 4
that clamped around the tail of the U-Joint ball housing and the torque tube.
Its soul purpose was to prevent the torque tube from drooping downward.
The reason for the torque tube droop is probably coming from the downward force when applying the brakes. Picture 5
Here is a GM film Strip (Starts on picture 35), about repairing the ball housing and the end of the torque tube.
Because of down force wearing them out.

About the the splice being robust.
I originally drew it up using a inner and a outer sleeve, but I was trying to keep the torque tube looking stock.
So I erased the outer sleeve, two sleeves might be needed to handle the forces involved.
Back to the drawing board.

To see if there is enough room between the propeller shaft and the inside of the torque tube housing.
I need to know the inside dimensions of the torque tube and the outside dimensions of the propeller shaft.
The inner sleeve may interfere with the propeller shaft if there isn't enough room.