I thought he meant these for chassis and body grounding. Sorry.
x2 for my BBC. (sorta)My 69 has one ground strap running from the inner fender passenger side to the frame. Its in front of the tire. I have two straps going from the valve cover bolts to the firewall. The drivers side strap goes on the outside of the valve cover bolt above the header while the pass side goes to the inside valve cover bolt next to the manifold. My 4th strap is on the frame below the heater box. Mine is broken, but I think it attaches to the one of the screws for the heater box.