I think that this is the LCOOL info you are referring to... if not, my apologies!
Ignition timing for the 1FZ-FE 4500cc petrol motor
This modification deviates from the manufacturer's specifications. This is not endorsed by Toyota. You are liable for anything and everything to do with your 80...
If I recall, it's tapered press fit. I think I used a hammer. But is your vise big enough to use it as a press - put a couple of 2x4 ends just longer than the bushing end in there and try to pop it with the pressure of the vise? Or use a pickle fork? Or hit it with a torch to see if that helps?
Does this give you what you need, or do you need something more precise? I'm around this weekend and can grab some calipers if you need more accurate info.
If you have the regular 80, it had regular chrome badges. If you found a new genuine 40th anniversary badge, then you did good, and should be able to sell for a premium. Regular rear Landcruiser emblems are still available.
There might be some ideas in here: Vinyl or Rubber Carpet kit? - https://forum.ih8mud.com/threads/vinyl-or-rubber-carpet-kit.472208/#post-13161118
Good luck, and post up what you find.