We ordered up a set of Currie RockJock 44 axles, the front a high pinion, the rear a low. Since this isn’t getting massive tires we went with 4.10 gears from Yukon Gear & Axle. We also had the front axle built with Dana 30-style knuckles and used a Yukon Spin-Free kit and hubs. We kept the spring-under axle suspension but upgraded to Old Man Emu 2-inch springs. We also added an add-a-leaf to the spring packs for the additional weight of the wagon body, but in hindsight we think only the rear pack needed the add-a-leaf.