Pocket door rollers for 67' Safari

[Adair]

Hello,

I am missing the pocket door rollers on my '67 Safari. The door and track are original. The track is a c-section and the rollers are offset with a 5/16" threaded stud going into a swivel nut on top of the door. I am wondering if anyone has tracked down the hardware to replace these. It would save me a lot of running around if someone has already tackled it in the past.

Cheers, Adair