To fit a cat bypass, you need to get access to the underside of the car (picture 1).

Step 1: Park the car on a flat, level surface & place the piece of wood in front of the front wheel(s) to prevent it rolling forward (the handbrake only applies to the rear wheels). (Picture 2)

Step 2: Using the jack, jack up the rear of the vehicle and position the axle stands as shown. (Picture 3)