As a new member of this forum, I would like to thank everyone who has posted info and experiences, it has been helpful. I would like to know if anyone has installed headers designed for the 02 - 05 Liberty 3.7L into their 05 - 07 3.7L Commander. I have found several sets for the Liberty but none for the Commander. I am not aware of any changes to the exhaust port design from 05 to 06 and location of connections to pipes. Please let hit me back with your thoughts.