Guess I should have added a bit more. The CD, FOC and standard forward gears are all the same ratios. So the Revo transmission with CD, FOC or forward and reverse will have the same ratio with the exception of the standard, narrow or wide gear sets, which as I mentioned above, have no effect on the CD, FOC or standard foward gears. Regardless of the CD, FOC or forward gears, you'd choose 2nd standard if you're using the standard ratio gear set or narrow or wide if you happen to be using those gearsets.