I have found that a 1&1\16" six point, deep socket (1\2" drive) is an essential tool to have. Sometimes difficlut to find. I bought mine from Sears. This size socket fits over the front end of the Model A drive shaft splines. I use it to crank over a newly rebuilt rear end before it goes into the car. You can also use it to drive the seal and bearing race out of the front end of the torque tube. Place the drive shaft on the ground on a block of wood, threaded end down, put the socket over the splines, slide the torque over it and bounce it. You might want to hold a rag over the end to prevent the seal and race from flying across the shop.
Tom Endy