I've put OME on two Land Rovers, a Disco I and Defender 90, and this gave me exactly what I expected. Better control, more capacity, better road feel, but stiffer as you'd expect from a heavy duty suspension. The truck has since been used on primitive double track while loaded for expedition use, and also as sweep for performance rallies in the Northwest where we follow the last race car down the stage at speed. It has performed beautifully in both extremes.
I've scanned the ARB paperwork, which lists every part needed. ARB stocks all of this since they distribute to all of the Americas from the Seattle warehouse.
For interest, I'll also include am image of us sweeping the Wild West Rally last Fall.
Ed