The drums may need to be replaced or turned before you can use them. The brake shoes and hardware will all need to be cleaned up. The adjuster do not turn and they will need to be soaked in WD40.
The backing plates are complete but they will need some work before you can install them. The item "52 53 54 Mercury Ford Front Brake Backing Plate Drum Shoe Hardware Parts 11x2" is in sale since Wednesday, July 26, 2017. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Brakes".
The seller is "71blakmav" and is located in Dover, Pennsylvania. This item can be shipped to United States.