The basic formula for building your own spring pack is to keep your main leaf and add whatever donor leafs you choose to that. This means you don't have to build or change your stock mounts. It turns out that adding a Comanche Metric Tonne spring pack to the main Cherokee leaf yields about 5 1/2 inches of lift. We only needed about 2 1/2 inches however, so we just kept removing leafs until we had what we were looking for. Dodge Durango, S10 truck, and S10 Blazer leaf springs also work well.