[bronze 72 super]

Don't know if this will help, but I just replaced both drums on my 1971 Cheyenne Super Dana 60 COIL SPRING. I live by The Dalles Oregon, and use a independent parts dealer. I don't go to "chain" parts store, they are useless when it comes to older vehicles. The invoice I always keep says: ADR 2071 Brake Drum 60296. Try ADR 2071. These are for 12in.x 2 or 2 1/2 can't remember which. These drums are not finned. Going any newer might not work. Yes these drums are hard to fine. The parts store I use had to do some searching, but he found a set, the only one's he could fine! Anyways hope this helps a little.