The 4.70 gear set makes a world of difference over stock. I havnt gone dual cases but my single case with the 4.70s has taken me virtualy every place my buddy with duals has gone, with my only limiting factor being my 32s VS his 37s. Compared with stock it makes decents and accents much easier to handle. i can crawl up hills with twice as little effort as a stocker. just a little tap on the gas here and there. best investment i have made thus far on my toyota. its mainly the lockers that are going to start breaking things, as everyone else has said. anyway, go for it! you wont regret it.
