Chevy II Z Bar Adapter.
This adapter is used on non Chevy II engines to attach the engine side ball stud in it's correct location. It is made from 1/4" flat stock, and includes the bolts and lock washers, to bolt it to your block. And the engine stud with jam nut, as shown.
The first picture (arrow) is a video, that shows were this is mounted.
The bracket is Made in the U.S.A.
This will not work on big block engines.