Ok. Im the guy that had noises and 2 failed used motors. So im going remanned. Intake manifold has been cleaned, no metal, just buildup. Throttle body cleaned, new oil pan, pickup tube, coil packs, sensors (mopar) etc. But since its a 0 mile engine....plugs? I bought champion copper but....once I use copper I wouldn't change from them personally. Is it the best choice to start with or ?