I have seen some talk on S197 forum talking about how the 3.31 is better than the 3.73. I haven't had any issues with my 3.73 gears and I was wondering, for those of you who do road courses, what do you think about the 3.73 vs 3.31? Would you change to the 3.31? I think if you do AutoX 3.31 gears would work great.