so driving yesterday and my check engine light came on and my car was acting funny. pulled into pepboys and got the code read, and that damn thing was $50. smh and then they said "do you want us to put it in the labor time is an hour" im thinking really?! and he said that would come out to $250!!!!! HELL NO. it took me 25mins to put that damn thing in. but why is there only one i thought there two cause are they not DOHC 3.8s?