looking at possibilities of mods for my 4L60E, i'd like to get just a little firmer shift out of it. nothing really wrong with it now, just not liking the way it shifts. i'm going to do some TBI mods to it, as well as the SAS swap with 4.56s and 35s, so a little more beef is in order to keep this thing alive a while longer. what are you guys doing for mods? i have no problems with burning my own chips and what not. dont have the equipment to do it, but will have in the future.