So I wanna do a full tune up. So far I'm doing coolant flush, plugs (bosh +4s?), wires(have no idea), pcv valve, egr valve, air filter(either drop in k&n or cold air, haven't decided with the weather and snow), and possibly 02 sensor and shocks. Any other ideas on what I'm missing or suggestions like on wire brand, or plugs, shocks etc? I wanna hit em all. Just bought it and although he did change the oil and keep reciepts, from the looks of the old ass air filter I'm not expecting much else to have been done.