Very easy to install, I changed my back springs without even removing the tires!
1. Jack up the back of the car
2. remove the sway bar(2 bolts on each side)
3. remove the bolt on the lower control arm, its close to the shock mount. Make sure you have a jack under the LCA. After removind the bolt, lower the jack slowly.
4. Reverse process to install new spring.
the front is a little tougher. I changed my ball joints when I did my springs so I took the whole lower control arm off. Make sure you have a jack under the LCA before starting.
1. remove the 2 bolts holding the strut to the spindle
You can do the rest a couple of different ways.
2. If changing ball joints, remove the tie rod end bolts, remove the nut on top of the ball joint, place the spindle on a jackstand or two out the way, slowly lower the LCA, and reverse for install of new spring. you can remove the LCA to change to ball joints, its held in by 2 bolts.
3. You can also get to the spring by just removing the 2 bolts going through the LCA bushings and lowering the LCA. You'll probably need to remove the 2 strut bolts. This way may be easier to remove the springs, but it's kinda hard to line up the holes on the LCA bushings.
Or you can use the previously stated method of disconnecting the cables and lowering the control arm and spindle together.