My current tranny is starting to slip and im starting to consider going with an flt built tranny. Im thinking about going with either the level5 4l65e or the level4 4l60e. Which tranny will i get the most hp with. Right now my truck is stock and it has the 4l60e in it now, but im planning to put the lq9 or the lq4 in it in about a year, so i figured i mine as well get the built tranny now. thanks for any help. Rick