According to my parts book, there were only 2 kinds of diffs:

38300-H1000 3.9 Diff
38300-H1100 4.111 Diff (Optional on Van)

I'm unsure about the Utes. As they had a different H165 diff, I suspect they were all 3.9.

Chris.

good trip,

unfortunately i didn't make it up the rock, i decided that i would drink a chocalate milk drink that had been sitting in the car for the last three days (hot days),
i already chucked that morning trying to go up the kings canyon track, and half way up the rock i started to fell mighty ill again.
its actually a hard climb for even a fit person, although three-five year olds run straight up and down without a problem cheeky buggers

but on a good note, we all (3 of us) went quad bike riding while we were up there, we went for half an hour the first day then went back for 2.5 more then next

they were awesome fun,
they are a four wheel RWD motorbike, 250cc, we followed an instructor through all these little tracks (he went pretty quick), it was awesome fun, highly recommended to anyone who gets a chance