The Rocker mouldings are the trim strips located underneath the doors and along the bottom of the rear quarter in front of the rear wheels. It protects the painted areas from chipping, and gives the car a classy look. They're probably 2 inches wide on a Gremlin. Look at the little sheetmetal area below the doors that extend back to the rear wheels. Thats where the rocker mouldings would be if the car has them. Usually holes located every 12 to 18 inches to mount moulding clips if they're missing. Jerry in Virginia