Rick, that's really an interesting and great picture. What's particularly interesting to me is that it looks just like the fenders on my '70 Hemi Challenger, with just about the same length of the lip rolled as on mine. The pictures MasterShake posted on his NOS/'71(?) fender shows a much longer length of the lip rolled than on either my fenders or your picture.

This continues my suspicion that there was a difference in the "Hemi Fenders" between the two years, and the cars on the line (mine are the original fenders) in '70 go somewhat shorter length of rolls than the next year (when they actually started putting "Hemi Fender" tags on Challengers). I've never seen one of those tags on a '70 Challenger (Cuda, yes), but maybe others have.