I just finished my 3rd set of these for a friend. People see mine and want me to make them a set. It puts a sky rack in a new Chevy by removing the rear grab handles. When you trade vehicles it simply unbolts, you put the handles back in and move it to the new truck. No damage to your vehicle. Mine were built for a 13 1/2 Ton, but I’ve had them in a 15 1/2 ton, 15 1 Ton and now a 17 3/4 ton. I’ve yet to look into how far back these exact mounts would work on chevys. Does anyone see a market for these? They take some time to make, but I could make several sets pretty fast at the same time. I’ve not looked into other brands of vehicles or stuff like Tahoe’s and suburbans. It would be some money, the big sky rack is $100. I’m not sure if I could make the mounts for less than $50 and it be worth jacking with. The ones I made last put the mount closer to the driver seat. Mine puts it back pretty far so it doesn’t block the lights, but it’s too far back for short folks.