Ok, so i've got cai and exhaust...what next? I don't think I can afford to put gears, as much as i'd like to, cause it will cost a lot to get the gears, chip, and t-loc all at once. So should I just get the chip, U/D, or what will give me most performance gains that you all suggest. And also, will the U/D and chips work for the 3.9L? Thanks.