2001 Silverado 5.3L 4x4 6" Lift. My old ranchos have completely disappeared, which was noticeable after they cracked small dents. I replaced all four shocks with these 5100s and it seems to be day and night. It handles very well, a bit too stiff than I would have liked, but hopefully it will break after a few hundred kilometers. I would definitely buy them again for my other cars.