Trying to figure out an ideal gear for my setup. My car was around 124mph at 6300rpm with a c4, 26" tall tire and 3.73 gear. I have been going over some calculators that I have found and seems like a 3.27 should get me around 145 at ~6120rpm. If anyone has anything to double check with that, let me know your number against what I came up with. As for the trans gearing, I really am not positive, its just the PA super comp c4