Great pics on the comparisons to the Sedan. They did do a little work the the body line in the rear on the Del Rio. It will still need a bit of sanding to remove the bulge tho. The lower part behind the tire needs filler still because the fender does not have the rocker indent. (The AMT is guilty of this also)
I believe the extra radius on the front of the wheel well is because the bumper was too short.
I am still curious if the grill was raised to keep the header panel from being too fat. According to the valance line scribbed to the body, it was not. The area from the valance line to the body line above it looks too large.
Slam me if you wish, but I am very familiar with these cars and it is my observation.