I installed a set of Curt bed rails in my truck. The installation kit is specific for the truck and needed no drilling. It came with the wires to guide the bolts thru the frame. It worked really well which made the installation relatively easy. I have a Trailer Saver hitch so rails were my only option. GM did not have any kind of mounting system when I ordered the truck.
2020 Ford F350 Platinum, 4X4, CCLB, SRW, diesel, 12,400 GVWR
2020 Jayco Pinnacle 32RLTS, Reese Goose Box