I have 2 complete limited slip differentials from 87 Starions. One had 70k the other had a little over 100k. Tagged for 3.54 gearing and the rest of the car was stock, so I don't think they were swapped. They are in storage right now, but I can check on the gearing sometime to be sure. I sold my truck and these are the last parts sitting around. They spin smoothly and don't seem to have any defects. The fluid in them looked pretty good and not burnt up.
Will split up the LSD guts and 3.54 gears if you want. Looking for $200 and I'll split shipping on one whole diff. Or $100 + shipping for each LSD or set of gears, your choice. Again I have two complete diffs. Best bet is to Pm me, because it will send an email and I check that everyday. My zip is 12566 and pickup would be much easier than shipping, but I'll do it if I have to. I also make my way to NJ from time to time and my family also makes a trip to VA too, so we may be able to work something out. No pictures with them in storage, but they wouldn't show much anyway.