[Jacques Reed]

Hi Dave,

Sounds like you have the earlier Bendix type CV joint and the later, just like modern type, Rzeppa type CV joints in the same differential.

Changes things, as perhaps the 'McGiver" grease retainer is correct. The face of the Bendix CV loint towards the wheel looks hemispherical according to the attached photo from the GM Maintenance Manual.

I've never seen the Bendix type so perhaps the flat one is the correct one for that type of CV joint. A good way to tell if the thin retainer was homemade is if the holes are not quite round. Most people drill triangular holes in thin sheet metal unless they go to a bit of trouble to prevent it.