Because of the lack of gearing in the axles I went with additional transfer case gearing in the form of an Offroad Design 203/205 Doubler I bought used. This was a lifesaver. I engaged the front NP203 reduction box and never disengaged it. This made up for our lack of low axle gearing on the road, but I still wish we had lower axle gears to spin the massive rubber. From the transfer cases we ran a set of JE Reel driveshafts. These were ordered and showed up days later perfect and vibration-free.