Go hear and scroll down a bit and you will see what I am talking about:

https://lmr.com/products/mustang-axle-guide

The 94-98 Mustang rear axle assembly is the same width (give or take a couple 1/16") as the 87-88 TC rear end. This is why they are preferred for a five lug swap in our cars and the parts are readily available everywhere for them.