How do you install bed rails on 1967 El Camino?

To install bed rails on a 1967 El Camino, first clean the area where the rails will be mounted. Align the bed rails with the pre-drilled holes in the truck bed or mark new holes if necessary. Use a drill to create the holes, then secure the rails in place using the appropriate bolts and washers. Finally, tighten all fasteners to ensure the bed rails are stable and secure.