I was in a financial bind on the build for this transmission. After it was repaired, we discovered an electrical issue. The replacement cost of the complete valve body was cost prohibitive at somewhere near $1200 from the dealer. The valve body was in good condition, but the conductor plate/TCM had a bad speed sensor. We replaced the conductor plate and the problem instantly went away. As far as durability, we have not had it out long enough to give an answer on that yet.