starions came with lsd back to 83 when they were imported here. The 88-89 supposedly have a stronger tranny and rear end but only because its a 6bolt setup and not 4 bolt. The lsd stuff should all be the same from any year(not 100% but pretty sure) Ive never seen one spun. It might have been replaced and done wrong, or maybe someone forgot some additive not that it would really do that. The only problem ive had with the lsds is the clutch packs locking up after sitting for awhile. a couple of figure 8s in a parking lot fix that just fine.

good luck

matt