Rear Brake Dilemma

I have a strange question. Recently, I started making my way to the brakes on my 67 Barracuda. I decided to redo them completely. When I pulled off the rear wheels, I saw something pretty strange (see pics). The car has 11inch rear drums on it and that caught me by surprise. But that's not the only thing, there were washers set behind the drum to keep it from rubbing the backing plate ....strange. My question is this... How can I tell what's supposed to be on this car?
The images can be seen here --> http://gdw-stuff.com/barracuda/?p=593