Just an FYI for anyone who bought a >2019 1500 with RamBoxes and the OEM factory-installed vinyl tonneau cover that comes with black accessory rails. After weeks of research, I discovered that you do not have to replace the black rails with the silver ones if you want to replace your tonneau cover. Many cover manufacturers (Extang, Lomax, BakFlip) require that you have the silver rails to install one of their covers over the RamBox set-up. Diamondback Truck Covers (https://diamondbackcovers.com) of Phillipsburg, PA, does not. Their covers will fit the RamBox set-up with black rails; in fact, they send you two sets of clamps -- one for the silver rails and one for the black. The covers are pricey, but seem absolutely rock solid and have a lifetime warranty. I've confirmed all this with an excellent customer service rep. Cannot wait to get mine, and I will provide an update after installation.