I bought the kit with the Koni shocks, ADO upper control arms, and parabolic leaf springs and it really improved the ride quality off-road. I was able to fit 33 inch 255/80R17 Falken Wildpeak AT3, 10-ply, load range E tires (a must for the razor sharp rocks of Nevada) that rubbed a little until I removed my front mud flaps. I have no more coil bucket contact and the ride is so much better than the factory Bilstein shocks. I love the way my truck handles on and off road. The way it handles washboard roads at speed is amazing. I did have to enlarge the holes in the plates to fit the larger diameter u-bolts on the rear axle and I may have to add a larger spacer to the front to level it out. The parabolic leaf springs are much lighter than traditional leaf springs, ride smoother, and can carry more weight, but since I am not usually driving with a lot of weight in the back the back end sits a touch higher than I would like. This kit was exactly what my truck needed because there was just not enough ground clearance from the factory.