FYI: it looks like the leggy rear end is the "newer" style... at least it's the same as all the diffs I was looking at for the SVX.
So Scotty, you should be able to find any 4.11 from a newer Legacy, Outback, or Impreza. I know D&D Dismantler had a 4.11 from a ~'96 Legacy... 'cause I put it on my SVX for a week then returned it when we realized it was the wrong ratio and had smoked my transfer clutch.
If you can find the one at D&D that I returned, it's already got the case ground smooth for the LSD to fit!