Pretty funny....I was banging on the wrong hole! Looks like that chamfered hole is a casting relief or something similar. Hidden very close by is the pin which I didn't see. I was able to push it out from the top down with a punch, heat, and some liquid nitrogen on the pin from an upside down duster can. It looks like an omni-directional straight pin.
I've gotten the old bushings punched/torn out. Will clean up the holes with some emery cloth and get working on inserting the new bushings.
1946 1/2-ton Stakeside A Little Piece of the Family Farm In the DITY Gallery