These Borla Performance Cat-Back™ Exhaust Systems (Part number 140233 & 140234) have been de- signed for the 2005-2007 Porsche 997 equipped with a 3.6L 6 cylinder engine, rear-wheel drive and a manual transmission. Borla Performance Industries recommends that an exhaust shop or professional after market parts installer, who has all the necessary equipment, tools and experienced personnel needed for proper installation, should perform the installation of this system. However, if you decide to perform the installation, we recommend someone should help you. Ensure the installer uses all under car safety pre- cautions including eye protection. Please take time to read and understand the following… By installing your Borla Performance Exhaust System, you indicate that you have read this document and you agree with the terms stated below. It is the responsibility of the purchaser to follow all installation instruction guidelines and safety procedures supplied with your Borla Performance Exhaust System