i have a 95 mustang gt with many bolt-ons and 1.7 rocker arms along with MSD rotar and cap with Ford Racing 9mm spark plug wires, and screamin deamon ignition coil. whats better for it NGK Iridium spark plugs or Champion spark plugs?
NGK Iridium, due to its precious metals that can take high heat and voltage and still run great under any circumstances. Plus they last way longer than other ones that are made of cheaper metals like copper and etc. I run it in my 89 fox cammed and works like a charm.