Our foundation started with a set of Solid Axle-built Dana 60 units to provide plenty of axle strength. The front is 65 inches from flange to flange and the rear full-floater comes in at 64 inches. This yields us an outside track width just shy of 80 inches. This width provides good stability while still being able to fit through fairly tight trails without a lot of fuss. The Solid Dana 60s are stuffed with ARB Air Lockers, Yukon 5.13 gears, 35-spline alloy shafts, and Warn hubs up front. Both differentials are high-pinion units and use 1350 yokes.