I have also wanted the mechanical specs for their parts, they must exist. but of course would be internal toyota doc's only.
I have a good original one laying around I think. what measurements do you need? I can grab the caliper and measure the LBJ bolt? could figure taper from those measurements?
I want to machine a spacer for a uniballs that fits the taper so I can run a regular bolt.
Since it seems no one is very savvy or willing to make uniball adapted LBJ that is going to be my next project. Machinist by day sort of so looking to do a few things.
I know dirtkingfabrications makes a lower arm spacer kit but it’s for new generations of 4Runner dunno if the 3rd gen has the same taper in the lower arm for the lbj