Resources:
NGK Spark Plugs
The official site of NGK Spark Plugs USA. NGK, The World Leader in Spark Plugs, is used as original equipment on more auto makes than any other spark plug in the world.
http://www.ngksparkplugs.com/
SplitFire
SplitFire Spark Plugs & Wires use patented technology to help your engines performance. We also sponsor NHRA and grass root programs from go karts to truck racing.
http://www.splitfire.com/