I just noticed this on Ebay. Looks complete, and the price is fantastic. Iirc, the price for everything new will set you back at least $2,500. Looks to have all the wire harnesses, etc. $750 is a great price. Problem is, style has it designated as local pickup. If you're near the seller in North Carolina, and want to go this route, I recommend jumping on this. This is what I have on my truck.
https://www.ebay.com/itm/Sport-Bar-w-script-led-light-bar-2021-2020-Chevy-Silverado-GMC-Sierra-1500-/373741910403?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0
Real owner experience on this setup:
It doesn't work with many tonneau cover. I had to modify the rails a little on a Retrax to make everything fit and function. Otherwise, go with a soft roll up tonneau.
You will need to run the wiring. The brake light in the sport bar replaces the brake light in the CHMSL. That means running one of the wires up to the fuse block under the hood and replacing one of the wires.
I didn't like the 2nd key fob setup for this light. I ended up dumping the fob and the entire wire harness for the fob. I installed the GM Upfitter switches on the dash and wired directly to one of the switches. The tradeoff is you're reduced to a simple on/off function and lose the 2 strobe speeds the fob provides.
The lightbar is high quality. The lenses are designed to throw the light from some cells straight forward, and the light from some cells outward. Baja Designs is the manufacturer, and you can change the lenses to whichever feature you want, and even to amber is color. They also sell covers to protect the lightbar from rocks, etc.