Jim,
If my college English Professor saw that sentence, he would have me graph it, break down the participial phrases, and rewrite it into at least three sentences. I'm glad it's laid back here.
To give credit where credit is due; others also mentioned fender washers/spacers. I have parted 21 Challengers over the last ten years. When the cars were parted they were not restorable. I photographed and kept everything from the cars. That is how I know where every nut, bolt, screw, clip, and washer goes. Looking back on it, I probably could have spent my time in wiser ways.