I have the Rockfather suspension installed on my 4-door. It gives me 32 inches of clearance, 46 inches of articulation, and allows me to drive straight up trees, usually to a height of at least 16 feet. I'm running 44 inch tires, and 8.44:1 diffs, all on e-lockers. With my 43 spline chromoly axles with neutronium CV's, I can run full power, wedged against a rock, at full droop, and it just climbs right up. During testing, I drove up the outside of a 10-story building.
...and they all lived happily ever after, the end.