Spring perches and shock mounts both will need to be relocated. You may also have to modify your e-brake cables to work. The spring perches are easy because you don't have to remove the old ones unless you just want too. On the van width axle, the perches are much wider than a K5. All you have to do is get some new perches ($8 pair at your local trailer supply store) and weld them on in the right spot. /forums/images/graemlins/thumb.gif