that’s the wrong piece on the transmission…it should be a U shaped part that fits into the notches on the bellcrank
look at my picture again and you can see the end of it with the spring, washer, and cotter pin.
LMC has it #2....junk yards are full of them, they were used on a lot of vehicles
It makes a kind of "floating" connection to the transmission
https://www.lmctruck.com/1967-72-che...ission-linkage