I've never saw a 73 with the shock bumpers, all the cars I've ever saw with the shock bumpers had the filler also on the rear, my 74 has the shock bumper on the rear and not on the front but my 73 doesn't, but there's a lot of cars out there I haven't saw
My uncle had a white "Gold" Duster that he bought new, it was white, white vinyl top, had gold stripe down the center with Gold Duster on the fender, thought I had pics but haven't found them yet, he had the car until about 5 years ago.