building dana 60 and confused.....

Actually these CAN break. I don't remember the class rules, anymore, but some classes in the old NHRA (and I'm sure other) rules used to call for a safety retainer (basicaly hooks around the edge of the drum, hooked to the axle) to retain it if one broke, etc.

Even though that retainer plate looks thin, it is light years stronger than clip retainers, and those don't fail (at least on stockers) very often.

I HAVE seen stuff come apart at the strip, now n' agin.