C 2500 Truck 2WD V8-454 7.4L (1988)
Figure 4
b. Use a 4.763 mm (3/16-inch) drill to drill through center of each rivet (Figure 4).
c. Use a 7.938 mm (5/16-inch) drill to enlarge hole through the center of each rivet.
Figure 5
d. Drill rivet heads away using a 12.7 mm (1/2-inch) drill (Figure 5).
NOTICE:
Use caution to avoid drilling through rivet head and into lower control arm.
e. Use a chisel and hammer to remove any remaining rivet head.
Figure 6
f.
Punch rivets out using a small pin punch (Figure 6).