Must be the grooves in the frame.

The person Doing the cosmetic dings and dents on the fenders was telling me the body was a bit tougher to malform especially by the doors with the three grooves. He doesnt understand it either.

The ceramic Die moulding?

As for durability; I had an SVX before this. Now that part did not have any sisters . The VX is a truck after all, and a big plusis the parts are not as hard as the body panels. Plus given the more rust potential parts are clad in plastic.

Just do not hit or break your headlights....