[header] How to install an exhaust system [title] Lift the car. [step] If you don't have a lift, jack up the back end so you can get under it. Use ramps or a jack, whichever you have. 
[substeps] Be sure to lock the emergency brake and chock at least one wheel that is still on the ground. Make sure to block the car using jack stands, wooden blocks or other sturdy blocks.