No three tab thrust washer as shown. Maybe the converter failed on this. There was metal chip also in output shaft, the shaft was partially seized on the rear sprag support, and the rear drum as well. additionally the gear that is clutched in the rear sprag was driven rear into the support and grooved the case.
Here are pictures. There was no fiber thrust washer for output shaft pilot, just the metal one. The fiber washers for the clutches were larger. While this was a 68 case and pump. The clutch have cast 76 pistons. So I am assuming the drums are 76ish too. Can that be determined, does it matter?