[JimR]

it would be ezer to use an O2 socket. (it has a slit cut in it so the wire fits and u dont f-up the wire, and so u dont have to use a wrench.) the O2 thats before the (Cat) its just below the exhost manifold heat shield. the one after the (Cat) is under the car just affter the (Cat). i believe the one before the (Cat) is $60 and the one affter is about $50.