I found a LSD on I think a 91? 240sx. It had those 4 lug 7 spoke alloys on it, and I don't know how else to determine the year. The car has 161k miles on it. WIll this differential work in my 98 240sx? Is it worth pursuing on a car with so many miles?

If this diff will bolt into my car, give me the details so I can go nab it right away!

Thanks