Well, the last dealer I spoke with said that Eaton doesn't offer a warranty on their posi's now. But for the most part, the unit will be seeing street and cruisin use. The strip I would hardly put the car to. Maybe once a year or something if that. I want a posi that locks up solid on the straight to keep the wheels planted and doesn't chirp around the corners that will stand up to some abuse and work great. Was wondering if anyone had any experience with either of them or others. The Auburn is apparently 100 dollars cheaper and if I did break it I would have another one on my doorstep within 12 hours free of charge. I am leaning that way. Just asking though....