My opinion and review... I own a 2005 Lincoln Navigator, which this item is suppose to fit based on the check if it fits drop-down menues. Since this item was suppose to fit I ordered it, took my 2005 Navigator to a professional (Local) Hot Rod Shop and was told the bad news (This doesn't fit) after all the OEM parts had been removed and new ones were attempted to be installed, and worst yet they (The Hot Rod Shop) contacted Gibson about the headers and were told that the (D) Port Heads my Navigator has (they don't make headers for)?... read full review »