After we test-fit the shocks and towers, we pulled the shock back out and put the new infinite-rate coils in place. This is really pretty easy, as the original coil falls out almost effortlessly once you pull the sway bar, shocks, and track bar from the axle. The infinite-rate coils are specially made to get stiffer as they compress, therefore increasing the spring rate with every inch they squish. The coils raised the front of this diesel Dodge almost 3 inches. Since the shocks utilize their full 10 inches of travel before the suspension compresses onto the factory bumpstops, no bumpstop blocks are included.