Well then, it’s not too difficult a job. Get the back of the car supported on jack stands and remove the rear wheels, disconnect the E Brake lines where they mount to the sway bar, unbolt the rear sway bar, disconnect the shocks at the LCA, put a floor jack under the LCA where it supports the spring and jack it up just a touch. Then unbolt the LCA starting with the one closest to the rear of the car and then slowly lower the jack down. This will allow you to remove the rear spring. After that you can remove the bolt that attaches the LCA to the body of the car and replace with the stockers in reverse order.
Sorry if I missed something. I’m sure someone will chime in if I did. This will probably take you about an hour or so by yourself. Oh and don’t forget to put your quad shocks back on if they were removed!