If you have not found these, I have some from 68. The driver's side short a pillar piece is on the car. I took passenger side a pillar off and can't find it (easily).
I have also not found anyone that rebuilds . Napa listed a rebuild kit for these but no longer available. Maybe some of the custom rebuilders could do it. If you have the original 1" bore Bendix casting with the retainer screw for an A body, hang onto it. I was lucky enough to find one some time...
I have a 3443977 radiator but I believe that is a 71 year number. It's also for automatic. I'm assuming it needs recored.
Bought it for a project but project has been sold.
I have the pair of these. Still attached to door panels. Looks like they spun the rivets (posts) to attach them. I am not sure how to remove them from the panel and save the posts. Any ideas?