Ok, I'm out. I misread your ad it sounded like you wanted a hub for a 10 inch DRUM brake. That's what I have.
Be careful. you are opening a big can of expensive worms. The only disc brake setup offered on 65-72 A body was the Kelsey Hayes setup which uses it's own specific spindle AND caliper brackets (have you considered THEM?). If you get a drum brake spindle, the caliper bracket is not going to bolt to it even if the bearing fits!
After you find the spindle and caliper brackets, the replacement parts are outrageous with calipers running over 200 EACH. The rotors arent cheap either. There was a FABO member advertising a complete rebuilt set in the $785 range for everything and that's a very good deal!
Many people use the 73-76 A body setup to convert. For that you also have to change your upper control arm. The new rotors are big bolt pattern (4 1/2 inch instead of the 4 inch that you now have and the Kelsey Hayes keeps).
You can get the newer setup in the $250-$300 range and the replacements parts are much cheaper. but then you need to switch your rear axles to BBP as well.
Good luck!