I didnt install mine, but i think the leveling kits is the most height you can get without extending anything. but mine just appears as if it is a leaf pack and new U bolts. like this. http://www.ebay.com/itm/FORD-SUPERD...T-3-0-/250892782591?item=250892782591&vxp=mtr mine has an extra longer one since its a 3.5.