Transmission ID

[NJKelly]

The shifter retention kit pictured. The outer tin piece which should swivel underneath the two pins cannot turn. The pin actually tops out and when I go to spin it it won't get past little Nubs. Pretty sure I ordered the right part but wondering if I made a mistake. If anyone can tell me if the retention kit is different for different Muncie Transmissions I'd appreciate it. I've attached pictures of the transmission as well.