[Ed Snyder]

The '67 and later trucks come with anchor points already installed in the B pillars. I can't imagine that the sheet metal in the '67 B pillar is any stronger or thicker than the B pillar sheet metal in the 60-66 trucks.

Getting the washer and nut up inside the B pillar on the '66 and earlier trucks is a little tricky, but just requires getting creative by doing something like welding pieces of stiff wire to them. Taping the nut to the washer helps too.