Alright the starter went bad in my 1954 ford customline with the 239 OHV V8 and 6 volt system, and i cannot seem to find a new starter for it anywhere.
Did you take it apart? If you didn't, Take it apart and see what is wrong. Might just need brushes and that would be a cheap fix. Brushes available at Rockauto.
Autozone has one just up the street from me. So does Orielly. Got a napa near by? YOu will have to change the gears out from your old one. Easy job nonetheless
Check www.electricalrebuilders.org on the left hand side of the page there is a search option member locator for rebuilders in your area.
Check also around your area for a shop that rebuilds alternators. They usually rebuild starters as well. 99% sure yblock and ford inline 6 223 are the same starter. Lastly removal of the starter in a yblock can be a real pita. Read post 4 & 5 in the link below. http://www.jalopyjournal.com/forum/showthread.php?t=679751
I stopped ******* around with all auto-electric components and some carburetors decades ago. I've been using the same 2 local rebuilders for 30+ years. They rebuild MY core (very important with some starters... look for the ****ed up Chevy 350 starter threads here...) and I get a guarantee out of the deal. Bob