rockauto are good people but you could prolly get them at a local napa.
https://www.rockauto.com/catalog/x,carcode,124301,pgname,Brake%252FWheel%2BHub,a,www.google.com%2BSearch%2Bfor%2B1948%2BFORD%2BF5%2BAll%2BEngines%2BBrake%252FWheel%2BHub%2BWheel%2BCylinder%2BRepair%2BKit