Hotchkis 1811 1994-1996 Impala SS X-Tend Rear Suspension - Manual (Page 3)

5. Remove the rear swaybar from the lower trailing arms.
Trailing arm mounts: 15mm socket/wrench for nuts
6. Allow the differential to droop as far down as possible.
7. Remove the stock upper trailing arms.
Fore mount: 21mm socket/wrench for nut & bolt
Aft mount: 18mm socket/wrench for nut & bolt