I have a set of 02 sensors for 98-02 F-bodies. i purchased for my 99 Camaro.I needed the C5 sensors so they could reach my longtube headers/ory so i have no need for these. The place i purchased them do no take exchanges/returns on any electric part even if never opened or used My loss is your gain. They retail for $71.99 a piece. I will sell for $60.00 a piece including shipping. PM me if interested