well, I replaced the rubber shock mounts and sadly that wasn't the cause of the clunk. but whats interesting is if I leave the shock disconnected, and have the wheel mounted I'm about to bounce the rear suspension with my hand and I THINK I'm generating the noise. I say "think" because I'm not sure if the noise I do hear is the normal sound of the various parts moving or if its the culprit. now I need I second pair of hands to bounce the rear suspension wile I watch/listen from underneath. theres what, 4 different arms it could be...sigh.