I installed these 2/18/6 on my 2014 Silverado and it took me 2 days. I won't say I'm an expert mechanic but I have rebuilt a few engines in my day and I was and Aircraft Mechanic in the military. There are I believe several reasons it took me almost 2 days to install these. First is because the instructions are a bit confusing. I had to call Firestone and wait on hold for 15 min because the picture of what I was getting on Amazon and all the videos I found showed different mounting hardware. They have changed the way the bags are mounted and therefore I was stuck trying to figure out how to put them on. Second when speaking to the tech support at Firestone the guy told me to jack the truck up by the axle instead of the frame because the bags wouldn't fit if the axle was hanging down. It is true they won't fit if you jack by the frame but if you jack by the axle you can't take the Jounce bumpers out because you can't get your socket into the bumper hole to remove it. So if you buy these make sure you start by jacking up your truck by the frame first, take the jounce bumpers out and then jack it up by the axle. I chose to use 4 jack stands and have two on the frame and two on the axle to keep the axle a bit farther apart than it would have been to give me room to squeeze the air bags into the space provided. They give you a heat shield for the passenger side of the truck but don't mention it anywhere in their instructions and the part isn't shown in any picture provided. It is only listed on the part list. So first you have to figure out what it is and then find a video of someone putting one on. It's not difficult but it would be nice if they told you what it was and where it went. I had to remove my passenger bag and reinstall with the heat shield. If you have a 2014 Silverado 1500 the Jounce bumper comes off with a 10mm socket. It took some time to figure out what size bolt was in there. It may be the same on other years so you might want to start with a 10mm and see if it works.I like the air bags and they seem to be well made. My brother has some on his Dodge and they work great so I expect them to do what they are advertised to do.Lastly in case you decide to install your air bags without a compressor and with a T so they both fill up at the same time and level, I'll make the following suggestion:I ran the air valve up through the hole in the bottom of the rear passenger side bed rail hole and turned it out through the hole into the bed. I slid a piece of fuel line over the tubing, put a clamp on and tightened it so I could move it but with a little friction. Then I slid the line down through the hole until it was protecting the tubing where it goes through the hole in the bottom of the rail hole. The clamp keeps it from going further down and a little friction keeps it from working it's way up. I put fender washers on both sides of the air valve and used the provided nut to tighten in place. This way I don't have to get on my knees to adjust the pressure. I only adjust the pressure when I'm camping so I have a compressor with me.I do think these are worth purchasing but get ready for a project if you install yourselfI've added a couple of pictures of the heat shield so you can see how it's installed. Hope this helps.