I have a set of stock style mosers, love em!
I haven't really beat on em to hard, but the thought that they are there is a relief,
besides, the stocker are about the same price, only not as strong.
C-clip eliminators eliminate the c-clip which hold the axle to the rear itself. They are the generally the weakest part of GM rears and many people decide to get the eliminators to get around that weakness.