Early 8 3/4 axle shaft interchange

The difference is in the type axle bearings you are using. If your using the factory taper bearing than it will work with the thrust button in your cone sure grip. If your using the Green style sealed bearings than your going to have to remove the thrust assem. or more than likely you will have to shorten the axles a small amount to get them to slide all the way in. And thrust button styles changed between the clutch SG and the cone SG you have. The change was around 69.