No, its more like....

Stainless trim goes on the outside ( or the top of the rear well edge) Screw, with the snap buttons go through the holes in the trim then through the body metal ( the holes are there)..

In my "baggy" of parts there are S shaped clips that the snap buttons must screw into underneath the body sheetmetal.. These "clips" must do another function based on there shape.. Curious which direction these clips are attached and if they do have another function as in, attachment of the well liner possibly.. This help?