Well I thought i was buying o2 simms for my car (1999 z) off of ebay but when they got here the plug ins are kind of oval not square, unless Im a complete moron and dont know where to put them, I figure in place of the rear o2 sensors So if someone knows what car they go to I will be able to resale the ones I have

 

You got some for an older car, 96-97 I believe.