best SPARKPLUGS for performance
or guys well my car is in need of to change the sparkplugs ..as of now im using motocraft.they work great..but now i want some that will give me the best performance..which performance sparkplugs will work great with my car and give it good performance..
im aware that bigger plugs are also better right now i have 8mm.wat would be a good upgrade??
98 Camaro LS1 H/C/I
07 Mustang 4.0