We switched to King bearings many years ago from a suggestion from an old pro stock racer and engine builder Wally Booth. I showed him some Clevite and Federal Mogul rod bearings that were not doing well and he said "put these in" We have never had a bearing problem since. Great Product and great price to boot. We have been using this bearing for over 13 years now, only one I will use in any motor. I actually tried to get them to make a HP version many years ago for the V6 and the engineer laughed and said "you already have them, just not chamfered" When the steel cranks became afforable in the last few years I tried to get them again since there was a need but there is not enough sales for them to do it.
ML