I think these are new shoes and new drums. I would hope that they are a match.
Sometimes the new shoes or relined shoes for Huck brakes do not have the chamfer at the top edge of the shoe lining. You can see that detail in the shop manual diagrams. It is not present in the Bendix style diagrams.
here is the brake adjustment in the 1947 manual, which should do for your Huck brakes.
Brake Adjustment