8 3/4 pinion spacer question.

Pulling out the crush sleeve?

Using an inch/pound dial style torque wrench get the rotational reading before removing the pinion. This should be done with the ring gear out. There is breakaway (higher #) and rotational, you want the rotational.

Once apart, measure the height of the crush sleeve. Make the spacer the same height and reinstall. Check rotational reading. Ideally you'd like it to be the same. Button it up.