I'm 99.999999% 79-98 8.8" axle housings are the same width. 99-04 are the years the housings are wider. They are the same part numbers from Ford Racing (79-98).
To run the SN95 rear brakes (Cobra or V6/GT) on a Fox you either need '94-'98 axles and stock brackets, Fox length axles and North Race Cars brackets, or Fox length axles and modified stock brackets.
Any of the three options will work. My choice is modified brackets and Fox length axles. SN95 axles will limit your maximum wheel width to 8" and NRC brackets cost $150.
Let me know if you have any more questions. I did a detailed write-up on the bracket modification on FEP and I think it was also copied onto the Corral.
The CV has a completely different axle set-up. It is possible that you could somehow adapt just the brakes to work, but it would not be a simple "bolt-on".
SO I can swap the axles in my sn95 rear with fox axles, modify the brackets and remount the sn95 brakes inboard to get more clearance? my 17x8 cobras are already close to the lip and id like them mounted in, plus id like to be able to run a more common sized weld wheel