Got an email on this post and was asked what my cars had. First car early 1971 Challenger Convertable 318 auto,wheel well trim, fenders are rolled for about 4 inches prior to the brace on the fender. Second car is a June built 1971 Hemi Challenger, no wheel well trim, rolled fenders same as the convertable, rolled for about 4 inches before the bracing on the fender.Before meaning in front of the bracing. I also have a pair of NOS fender and they are NOT rolled. Looking at that I would imagine it was done prior to alpo or paint in the body shop at Chrysler. I believe it was an option job that came down the line once in a while when the 15 inch large tires and rims were going on a car and if the worker felt like doing it then it got done. The body shop in the 70s was a place that no one wanted to work, dirty smokie and you had to wear coveralls and protected gear it was hot. so the low seniority was put there and they would move to another job as fast as they were allowed.