That AMC 20, corporate rear end stayed like that all the way up until Chrysler bought them out in 1988, the jeeps had them until they started using the 8.25. Your right Rob Cant believe they used that outdated axle so long.
I thought that used that rascal way late. I remember them well, because I was always the only one in the shop that had the tool to remove the axle flange and drum. They were STILL swedging drums then too.