For those running a th350 or 400 box just wondering what diff ratio you are running. I'm at 350rwkw on 98 and 420 on E85, planning to race my car but will be a streeter and will see a lot of freeway time. I'm considering a 3.45 just because I don't want to sit at 3000rpm+ at 100kmh Also has anyone ever considered the 4l80E? The TH400 but with an overdrive?