So I installed one of the 14" wide flaps on the rear, and it stuck out a couple inches from the fender. It didn't look right at all. With fender flares, it probably would have looked ok. But on the Platinums there are no fender flares, so they really stick out. I'm sending the rears flaps back, and they're sending the rear drill-less 12" wide, extra long (14" long) with the smooth stainless (FR 2XL 11 SS). I'll post up pics when they come in and I install them. I did install the front ones (12" wide) and they look good.You mentioned you had a long bed. I have a short bed and didn't know if that made a difference or not. I guess I'll have to try and take measurements but don't really know where to take it. Post some pictures up when you get it on. Also do you have wheel liners in the rear. I do and not sure if that makes a difference also
I do have the wheel liners in the rear and had to remove them to install the flaps. The flaps protect that same area as the wheel liner, so there is really no reason you would want to keep the liners in place once the flaps are installed.