I just bought a Halibrand 101. The studs that attach the axle housings are much smaller than the the Ford bolts that hold the housings to the center section. This leaves a lot of slop. Did they use nuts with a step in them to fill the gap?
The 101 studs are typically 5/16”. Is that what yours are? The Ford bolts are 3/8”. The Halibrand 101 was made to use their own side bells, which had 5/16” holes. Typically for midget race cars. If you’re going to use a torque tube, you’ll probably have to modify the holes to fit. The bolt circle is slightly different.