i have a 91 integra ls and i need a new o2 sensor so i am giong to the junkyard tomorrow. i need to know if it has to come from the exact same year and make or can i get one off of a civic or an accord. also where is the engine identification (b 18 , h22 )? it feels like ive looked all over the engine bay and i still cant find it. :snoopy:

not fast and furious, more like quick and cranky