Were there any '95 540 6-Speeds w/ LSD's?

If so, was it an option that should be listed in the car's listing of codes (the 3-digit codes) ?

I pulled the diff from my '95 540 - the tag is dirty and hard to read but appears to say "2.93" - I can't tell if there's an "S" before the "2.93." Also, the diff's casing has what appears to be an "S" inside a box that was sprayed on in yellow with a stencil.

Finally, when you grab one output flange and turn it, the other output flange turns the same direction - so it appears to be an LSD, but I thought they didn't come with LSD's --- only ASC+T...?