Original hemi dart information

[Charlie A]

I seem to notice panel alignment. Maybe from my teenage days in a bodyshop.

If you look at the pic you sent compared to the one above it at the strip, the bottom of the grille is now sitting on the top of the bumper. The top of the fender begins to angle down where it meets the door. If you take a pie-cut shape down the back of the fender, Say 1 inch at the bottom to 0 at the top,you "droop" the fender and improve aero. A LOT more work than just that to make the complete nose to droop but you get the basic process.
Lots of the older Pro Stock cars did that.
I believe it was originally a NASCAR trick.
Look at some of the 60's and 70's NASCAR (when they still looked like real cars) and you will find all kinds of aero stuff hidden there. From 50 feet, barely noticeable.