one of my friends that is a road racer says if at a race you see 2 or more guys talking and at least one has a calloway corvette or a viper that one of them is asking around for a core t56 to build-----before you offer up that they can be built up are you saying calloway or viper is putting the weak units out the door? the formula is if you have 600-700 hp and are trying to win you will be breaking transmissions-----heres hoping the passon units are a superior design....bob