I just got these in - took about 2 hrs. If you do this right you shouldn't need to remove the coil spings.
I jacked up the truck from the axle pumpkin as high as it would go. I jammed 2x 6 ton jack stands just where the frame starts to loop over the wheels. I took of the rear tires and then let the jack down a bit to unbolt the shocks. I did not need to unbolt the brake lines from the body. The only thing I might suggest is unbolting the the sway bar mounts from the frame. The axle went down enough but I had to sit on the rotor to get the springs out. One shortcut would be to flatten the air bags and push them between the coils instead of removing the springs. Another thing to point out - if you have the plastic inner fenders you will need to remove those to see what you are doing. The top spring mount only goes in one way, but mark the spring regardless. The bags were easy to drop in, but it took me a bit to get the spring top mount back aligned. Once the bags were in and the springs back in I jacked er up and watched the bags seat - they needed a little help getting past the doughnut spacer on top as one of the air line clips hung up for a second. I reinstalled everything - shocks, and fender well liners. I ran the airlines up and over everything in the back to the license plate flat area. Drilled 5/16 holes on each side of the plate and mounted the Schrader valves. I pumped to 20 PSI initially. Seems pretty stiff. Will know more once I get our trailer hooked up. I give these an A for install - pretty easy. We'll see how they do with the trailer.
I jacked up the truck from the axle pumpkin as high as it would go. I jammed 2x 6 ton jack stands just where the frame starts to loop over the wheels. I took of the rear tires and then let the jack down a bit to unbolt the shocks. I did not need to unbolt the brake lines from the body. The only thing I might suggest is unbolting the the sway bar mounts from the frame. The axle went down enough but I had to sit on the rotor to get the springs out. One shortcut would be to flatten the air bags and push them between the coils instead of removing the springs. Another thing to point out - if you have the plastic inner fenders you will need to remove those to see what you are doing. The top spring mount only goes in one way, but mark the spring regardless. The bags were easy to drop in, but it took me a bit to get the spring top mount back aligned. Once the bags were in and the springs back in I jacked er up and watched the bags seat - they needed a little help getting past the doughnut spacer on top as one of the air line clips hung up for a second. I reinstalled everything - shocks, and fender well liners. I ran the airlines up and over everything in the back to the license plate flat area. Drilled 5/16 holes on each side of the plate and mounted the Schrader valves. I pumped to 20 PSI initially. Seems pretty stiff. Will know more once I get our trailer hooked up. I give these an A for install - pretty easy. We'll see how they do with the trailer.