I'm going to be using the stock getrag with 70k miles on it. From the research I've done the common consensus seems to be the f40 is the way to go. I will probably go that route down the road but for now will stick with the getrag. V8 Archie says the getrag will hold up pretty well. I don't intend to be beating on it much. That might change when I can stab the v8 however. 😁