Hey guys i am installing new Oxygen sensors on my 97 Integra and searched the forum and found a post that told me their are 2 of them on the bottom of the car. (One on Header) (One after/on Cat) i know the one of header is called Position 1 and the Cat position 2 but where the hell is position 3? I was about to get some NGK OEM Sensors and i saw a position 3 and started freaking out. Can someone tell me where this last sensor is? Thanks, Brian