10" Drum brakes on Early A

You need the '65-72 A-body 10" spindles, backing plates, hoses, hub/drum assy's. bearings, seals, and all the shoes and hardware for 10" brakes. The stock 13" wheels will probably not work over those 10" drums. It's a real tight fit and due to the crude manufacturing of those parts back then, interference is common. The early 13" wheel are the ones with the wide slots between the center hub and other rim. Starting in '65, they remade the 13" rims with a narrow slot. Those will work if you insist on staying with 13" wheels. Now, all that being said, why in the world would you go to that trouble when you could have a much better braking system going to disc brakes? It's about the same amount of work and parts to change, just more expensive. I guess if you can get the 10" brake setup cheap enough and you can do the work yourself, it might be worthwhile. Wouldn't be for me though.....not a big enough upgrade for the work involved.