Gear choice

Like @MopaR&D said, if you are installing an ax-15, you definitely don’t want anything lower than a 3.21. I originally had 3.23’s in my Duster with 25.6” tires and first gear was basically useless aside from taking off on a hill. I’ve switched to 2.76’s and it’s MUCH better. In fact, not accounting for torque multiplication from a torque converter, the ax-15/2.76 combo is almost identical in rpm/mph as a 904 with 4.10’s.