I just had the Calmini lift installed Friday. I haven't had a chance to take it off-road yet but I am really impressed with the improvement on-road. It soaks up the bumps much more progressively than the stock suspension. The rear-end stays planted now when going over railroad tracks. It used to hop all over the place. I have about 60k miles on the truck so my stock pieces were pretty well worn but so far I am impressed. I'll keep you posted once I get it off-road.