[rober]

What you need to do is get yourself a 3ton floor jack (around $60) and a pair of 3ton jack stands with deep curves (around $16). Then follow the following steps.
1. Engage the emergency brakes. Push the emergency brakes lever always down.
2. Locate the midpoint of the engine support bar underneath the engine, place the jack at that point and jack the front end of the car up.
3. When both front wheels are off the ground, locate the two notches on the side frames near the front wheels and put the jack stands there (one on each side). Make sure that the jack stand curves are in between the notches so that they won't bend or crush the car's frame at those points.
4. Slowly lower your car until the front end of the car is completely resting on the jack stands. Make sure that the car is securely resting on the stands one more time and release the jack.
5. Locate the support steel bar that supports the rear end of the car and use the floor jack to jack up either side of the car. If you want to rotate the left side first then place the floor jack near the left rear wheel and jack it up. Do it one side at a time. Once a rear wheel is up you can unbolt the lugnuts and do the rotation. Once you've done rotating one side, slowly lower the rear end of the car and repeat this step on the other side.
6. Once both sides of the car are rotated, take the floor jack to the front end, find the midpoint of the front end support bar, place the jack at that point, jack the front end up until the front end is above the jack stands, take the jack stand out and slowly release the floor jack to bring the front end down.
7. Release the emergency brakes and you're done.