There was a huge thread about it on DSMtalk when I searched on it. Basically no one can prove that it causes anything to go wrong. Sure it puts some extra stress on the rear axles, your turning radius sucks, tires hop, you get the clicking, and it also worsens gasd milage from what Ive read. In my opinion its not worth it at all, unless your running in the 11s the stock diff is fine. I cant wait to go back to it.