As far as the XRF Lower Ball Joints for 67-72 A body goes, MIbearings.com no longer stocks them and they called XRF today, who said they no longer plan to make them.
I am however ordering the rest of my steering parts from them today.
Hoping I can find some good lowers for my car and avoid the Moogs! Maybe Raybestos???
Below is a copy of their reply to me:
Hi Doug,
So sorry we do not have your ball joints in stock.
Just talked with XRF and they will not be getting anymore in at this time. Please let us know if we can help you further.
Thank you.
Sue/MIBearings.com