I purchased these with Rancho 9000XL RS999306 adjustable shocks after our stock air strut system failed. I eliminated the stock air compressor system entirely and manually inflated it with a compressor using a 12 volt outlet. I heard from a friend about a local company called Bond Fluidaire that specializes in hydraulic and air fittings. They are located in Grand Rapids Michigan and they have a website if you google it or you can find something similar near you. They helped me a lot to get rid of the standard system and create a manual pouring system. Basically I bought a tee, an air pressure gauge and a Schrader valve. I routed the air duct to the jack storage area at the rear of the car and installed a pressure gauge and valve for easy access and weather protection. I also purchased a 12v Slime 40022 compressor with outlet to use with this system. So far this has worked great. The best part is that it screws onto the schrader valve, you set the pressure you want, then turn it on and away you go. The compressor will shut off when it reaches the pressure you set. In terms of installation I wouldn't say it's easy, getting these things in the feathers is definitely difficult. Air Lift has posted some videos to help you demonstrate the process, but be prepared to spend some time installing it. I've had the pleasure of installing them twice after learning important information about standard air shock systems. The springs that come with these standard air shock systems will NOT work with traditional shock absorbers. You need a heavier spring to get a traditional damper. Learn from my mistake if you do this rebuild and change the springs at the same time as installing these air springs. If you don't want to install them, uninstall and reinstall them. It's also a lot easier to install them in the new springs first, then compress the springs and install them in place of the old stock springs. See my Rancho RS999306 review for more information.