Not too bad if you're willing to settle for a less than optimum driveline angle, quite a bit if you want it "right". I have no regrets about going the Keisler/Tremec route. Unlike what I've heard from some others on this board I actually did get good customer service from Keisler. From everything I've seen, the Passion unit will be a superior choice once they get everything ironed out. On the otherhand I've had the benefit of overdrive for almost ten years now. If you wait long enought there will always be something better to come along. The question is how long are you willing to wait? Keisler has been advertising their new "made in the USA" transmission for a awhile now, but I don't know if they have an "E" body version of it yet. Mine is an early TKO and there is a fairly large spread between 1st. and 2nd. gear. First actually has more gear reduction than you can really use. The newer ones are better in this regard.