Installed on a 2019 Ram 2500. Easy driver's side entry. It was incredibly tight on the passenger side. The screw holes could not be aligned (see photo). Firestone support acknowledged that the fit can be incredibly tight, but that didn't help. I had to use an external clamp to line up the screw holes. It's definitely not in the instructions. But once installed, the bags work as advertised. Because they need to have minimal pressure at all times, they make the overall ride stiffer, even when not towing.