OK,I was able to make it to my parts car,a little bit of snow and ice to slog through.These indicators mount at the outer edge of the fender right up on the ridge.Measuring from the rear edge of the fender,closest to the door,to the rear bottom edge of the indicator is 53 1/4".From the front edge of the indicator to the front of the fender is 3 1/2".There is a seperate belt molding that runs the entire length of the car that butts up the indicator,but I doubt the Roadrunner has that.More of a Satellite thing.I hope this is able to help you out.If not let me know if you need any more information.