Download How to Install Suspension Lift Kit on ‘07-08 Chevy 1500 Pickup – DISASSEMBLY AND ASSEMBLY OF DIFF DROP KIT 1. Remove the 2 diff bolts on driver side differential that attach the diff housing to the frame mount. Install diff spacers (P/N C3DB) using new M12 X 1.75 X 50 bolts. This is to space the diff down ½” to improve the angle on the CV boots. See Fig. A 2. Repeat this process on the passenger side of the vehicle. Remove the 2 OEM diff nuts on passenger side differential that attach the housing to the frame. Install diff spacers (P/N C3DA) utilizing the supplied M12 x 1.75 nylon locking nuts. See Fig. B REMOVAL OF FRONT STRUTS 3. Remove the brake line brackets that attach the brake lines to the upper control arm using a 10mm socket. See Fig C & D 4. Remove the sway bar end links using a 15mm wrench on the top nut and a 15mm socket on the bolt head at the bottom See Fig. E 5. Remove the steering tie rod ends using a 21mm socket (ball joint removal tool to be used here). See Fig. F 6. Remove upper ball joint nut using an 18mm box end wrench or socket and separate upper A-arm from cast spindle with appropriate GM tool or equivalent. See Fig G 7. Remove the lower strut mounting bolts using a 15mm socket. See Fig H 8. Remove upper strut mounting bolts using a 12mm socket.