There are 6 clips per side on a '70.

Centerline is 1 3/4" from the top on the rocker and 3" from the bottom.

5/16" hole size.

The first hole is 6" on center from the front, and 5 additional holes spaced 9 1/2" apart on center after that.

The screw hole is 1/8", centerlined 4 1/16" from the bottom of the rocker and 2 1/2" measured from the front of the rear wheelwell.