sorry guys, I must be a moron. I swear I've seen them on several cars, most with rwd(several newer caprices and an older Isuzu). I was working on one of my other cars (93 caprice) and it has one. One of the guys at my church owns a garage, so I asked him about it. He said that its called a smog pump, and told me what I told you, I guess I'm looking for a second opinion now. He said he had one on his similar year sunbird, so I assumed my cavi had one too. I took it apart, and all it was, was an airpump, and it looked like it ran back into the exhaust manifold (am I completely out of my mind ?) It was mounted lower on the accessories bracket and so when I couldn't see it on my cavi I just figured it was hiding somewhere. Help me out here guys. Am I THAT stupid ? Thanks in advance.