Here is my situation, i have 3.55 gears in my car right now (bought it this way). I hear of all you with 4.10's and am jealous. But the dilemma is, i plan on getting a supercharger sometime between this summer and next summer. If i went 3.90's would it be too much with a supercharger? I want to get 4.10's but i know it would be a waste with a supercharger and i would wish i hadnt got such a low gear. So what is the best option to go with to tied me over for now (and be noticable over 3.55) but still be fine with a supercharger? Or do i just keep the 3.55's?