2007 Silverado WT 5.3 (new body) with the towing package and a 3.73 (LSD option). Stock LSD became real hit or miss just a few thousand miles into owning it and now it's stopped working all together I've tried and tried to get the dealer to replace this thing but I either get the "could not duplicate" or "it works fine". Short of taking a service advisor for a drive in the rain and roasting one tire till the cows come home I think I've gotta purchase aftermarket. So I'm trying to dig up aftermarket and trying to figure out a way of identifying what is there in order to purchase something. Can anyone help point me in a direction. The Eaton Application guide gives me what appears to be 2 options. http://www.eaton.com/ecm/groups/public/@pub/@eaton/@per/documents/content/ct_128302.pdf Page 1 7.5/7.6 or 8.5 10 bolt C-clip.