Rear Seat Latch Lock

I have a 1992 4Runner, and the drivers side rear seat latch is broken. The male threaded post that the knob screws onto broke in half. I can't seem to find the part anywhere online. Anyone know where I can find a new latch assembly for a 2nd Gen North American model? Pics of the functional knob, plus the broken one attached.

Thanks in advance! I've been poking around all of the websites I can find, but I've been unable to source something that appears to match.

 

Welcome

 

Thanks! Sorry, I know it's not generally good form to make your first post in a forum asking for help. I happen to have this family heirloom '92 4Runner in pristine shape, all original. I'm not a big off road / truck mod guy, but I'm trying to take care of this thing as best I can. The family member that gifted it to us bought it new in 1992 and took great care of it until handing it over to us a few years ago.