I remember reading a thread about different types of Dana 60 front hub splines. Someone had trouble putting locking hubs in a hub that came with a drive flange. I don't remember is the splines weren't deep enough or there was a lockring issue. I can't remember exactly, that is why i am trying to find it. I searched, but didn't find the tread.

Does anyone else remember the thread?

Also, do Dana 44 fronts have the same problem?