I know of 4 failures of these boxes (one smaller 200Z model) and I may not have heard of them all. The high time one though has over 500 hours now on an LS1 I believe without reported issues.If all the information that has been provided is true and accurate, then it appears there have only been two recorded failures. In both cases the information provided indicates that the pilots were pilots used to aggressive flying, or pushing the envelope so to speak. Also both pilots were using engines that had the ability to exceed the specifications of the redrive. All the redrives being used by other builders appear to be having success. I guess time will tell us the answer.