I'm about to install some repo rocker panels on my 1967 coupe. There were no instructions that came them them. Any advise or links for details. Looks like they are held on with some rivet pins. I think the fat side is "up"?
The rocker panels attach to the plastic clips that are riveted onto the car. The rocker panel has a curved profile with a flat portion. The flat portion goes toward the top. Then push the rocker onto the clips. Lastly, there is a stainless steel screw that holds the panel onto the car, up by the fender area. You're done!
If your car does not have the clips on it, then you'll need to get a copy of the manual that shows the location of the clips or find a another '67 and get the measurements.