Many Mopar tilt columns were Saginaw. The non-power steering box in my '64Dog is a Saginaw. That box looks like a Saginaw to me. It should have a big letter "S" cast into the body.

Saginaw Gear was owned by GM but is now a part of Delphi, a separate company.

The point of all this is there may be a bunch of GM cars using that joint.

R.