8.8 swap

so what case spread dimension are you going to use -as i have never seen one published -- Dana diffs have this dimension available and it should be used when using the case spreader -- you will probably distort your case and cause yourself problems
they actually make a tool to drive in the carrier shims -- i made my own out of 1/4 aluminum plate -- you do not want to pound directly on the shim to install it.
Ford built a few million of these diffs without needing a spreader ,, why start now.