You can find a few tutorials that show you how to install the compressor or switch boxes. If you need help you should post in the suspension and brake section of this site and search around I am sure someone did some walkthroughs. All of the air ride components replace the stock springs/strut assemblies.
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The install is fairly simple and straight forward.
Switch out your stock suspension for the bags, run the airlines, and wire it up. The directions that come with the kit should be enough. But you might want to check airlift's website, they might have pictures to help you.