na, reasonably easy to come by, ppl want mad cash for them tho. I sold my re-shimmed LSD (was so tight it may as well have been a locker) for like $350-400 a couple years back, so don't pay much more than that.
from memory even when shimmed the hilux is a weird sord of LSD that will eventually go 1 wheel even if its brand new. its hard to explain, will spin 2 wheels to a point i guess