Those are hammer marks, not road rash. Whoever did that "work" must have gone onto great success, forcing square pegs into round holes. :butcher:
Can't really tell how deep those scars go. With those hi-res photos, on my monitor, they're larger than life and look horrible. Might be able to clean up this part but, honestly, I think you're right. A better specimen is needed if the objective is purist-original. Leveling the deformed surfaces is going to visible alter the profile, taking a lot of casting detail with it. Happily, finding a used original that can be restored should be easy and a helluva lot less money than NOS.