Then & Now Automotive rebuilt mine about 6000 miles ago. They also rebuilt the one in my '56 Coupe de Ville.
Just FYI, it's widely known that new fuel pumps for virtually every make and model are absolute junk from the get go. Friends in my Cadillac circle send brand new fuel pumps straight to Terrill Machine in Texas or Then & Now in Massachusetts to be taken apart and rebuilt.
The problems range from incorrectly installed valves, poor quality diaphragms, incorrect spring tension, and incorrect throw of the lever arm.
https://www.thenandnowautomotive.com/auto-parts-storeTerrill Machine 254-893-2610