Step one in the installation is to jack the car up and support it with jack stands. I put the front springs in first. I jacked the car up at the front engine cradle, just behind the front a-arm. I then supported the car with a jack stand under the cradle, freeing up my jack to support the lower a-arm.

Step two is to remove the upper strut mount nut.
***WARNING***It is a snap installing your new springs without a spring compressor if you're careful. Extreme caution should always be used when removing the upper strut nut. Springs store a lot of energy, and can hurt you if the proper removal and installation procedure isn't followed. Do not remove the large 21mm nut on top of the strut unless the car's weight is supported. If your jack is placed under the front lower control arm, this will slightly compress the spring and allow removal of the upper strut nut without movement of the spring.

Once you've removed the upper strut nut, remove the 10mm bolt that holds the brake hose bracket to the strut assembly, as well as the 18mm nut that holds the sway bar end link to the strut body, and the plastic push-pin that holds the abs wire to the strut.

Slowly and carefully lower your jack. This will release the pressure from your spring, and the strut shaft will lower beneath the upper strut mount. Keep your hands and feet clear of the lower control arm.

Once the lower control arm is completely off the jack, and the spring is relaxed, remove the 2 18mm bolts from the lower strut mount at the spindle, and remove the 4 13mm nuts that attach the upper strut mount to the body. This will allow the entire strut assembly and spring to be removed from the car.

The new springs are much shorter, negating the need for a spring compressor. To install the new springs, simply replace the strut boot with the shorter one from the kit, and set the new spring on the strut body, aligning the ends of the spring with the reliefs in the strut and the upper mount. You can then install the upper strut mount on the strut and use one hand to depress the spring just enough to re-install the 21mm upper strut mount nut onto the strut shaft before tightening it down.

Reverse the disassembly procedure to re-install the completed strut assembly back on the car.

The rear of the car is a bit easier.

Jack the rear of the car up at the rear differential.
Support the car with jack stands. There is a flat spot just in front of the rear lower control arm that serves as a great place to set your jack stands.

With the jack still supporting the car's rear, remove the 15mm bolts that hold the shocks to the lower mounts, as well as the 15mm bolts that hold the sway bar end links to the body. You may also remove the two 10mm bolts that hold the brake hose brackets to the body to gain additional travel for easier removal of the spring.

Lower the sway bar out of the way.

Slowly lower the rear end, allowing the car to settle on the jack stands. As the rear droops, pressure will be released from the rear springs, allowing you to simply remove them by hand.