DRATS!!! INFORMATION I COULD HAVE USED FIVE MONTH AGO!! LOL
Actually, I did know that. While researching I happened upon one. However, after a few minuets with a tape measure I found the Mustang rear was not wide enough for my application. While I would have preferd the center pinion of the Mustang rear, I could not locate one with the gear ratio I wanted (3.27) and limited slip.
I found this rear at a local salvage for $75.00, pulled, cleaned and loaded into my p/u. I opened the rear up and while the internals appeared to be in very good condition I installed new gears & bergs.