As mentioned the Cuda belt trim is held on by push pin plastic clips, on the Cuda you install the clips on the door/qtr first, them "snap" the molding onto the clips, the plastic clips are all the same size/shape door or qtr, the only clips you'll install on the door moldings before installing the moldings will be the metal stud clips that just slide in the rear of the molding at the end of the door to prevent the molding from sliding on the plastic clips once installed

Mike