I went from 2.73's to 3.55's in my full weight 5-speed LX, and honestly, if I could do it all over again, I'd go with the 3.73's. Don't get me wrong, the 3.55's are still a night and day improvement over the 2.73's, but it could still use juuuuuuust a little more. The only disadvantage to them, is that when you're tired at the end of the day and are feeling lazy in stop and go traffic, you'll find yourself alllllways rowing through the gears. First gear get's pretty short when you get beyond the 3.55-mark.