ADJUSTABLE 1 to 2.5 FRONT + 2 REAR SUSPENSION LIFT KIT WITH REAR SHOCK MOUNT EXTENDERS AND TORSION TOOL. Simple Instructions for Easy, Do It Yourself Installation. For 03-17 express savana awd 2½ f + 2 r lift kit + shock extenders + tool developed and rigorously tested by in-house ase specialists, supreme suspensions lift kits are engineered to raise the factory rake of your vehicle, enhancing its look and providing a more aggressive profile.