Hello, I am having some trouble with the rear of my car as I have a rod end shock (like the M3 uses) and I am getting a knocking noise from the rear of my car. I'd like to know what the stock M3 lower rear shock mount looks like. Is it a bearing that connects it to the camber link? Or is it some kind of rubber with a metal piece inside? Would someone kindly take a closeup picture of the lower rear shock mount? It would really help me out because my indy nor I can find the source of the sound! 
Thanks

Thanks