We replaced both quarter panels on my '74 duster with new skins. They were pretty flimsy, probably from china. Once on and in place with sheet-metal screws it wasn't quite like how it should be, especially around the tailpanel area. I was short on time and had no choice but to use filler. It sucks I had to go down that road, however I can say that there is less filler than before the old skin was cut. I should also mention that once welded I had to use more filler to shape the body lines and thats an art in itself. It's a job that is easier said then done. Much harder and frusterating than I expected.