I've heard Ford has done a lot of field testing with the 5.0. The 4.6 3v was much more different that the 2V it replaced with VVT and electronic throttle, and not a lot of failure there. The transmission will be overbuilt like our 4.6's to take the power as will the engine block. As someone earlier stated, its likely computer updates will be needed. I wish I could get a 11 right now. Good luck.