M8 Hub/shaft studs.
This thread has the best pictures and parts numbers
I would leave the stock studs alone and see if you have issue first. Many don’t, especially with selectable lockers, i broke them a few times but I had the lunchbox locker so unneeded stresses for sure...
Correct, it's for the vacuum-shift splitcases (FJ62). I couldn't remember if CD was using a splitcase or HF2A so I just threw it in to be safe. Not sure how his T-case linkage will work exactly with his HF2a and the 60 floor hole. :hmm: