has anyone tried these? http://www.latemodelrestoration.com/item/MSD-37144/Mustang-MSD-Iridium-Spark-Plug-Kit-07-14-GT500
FEATURES:
x8
FINE IRIDIUM TIP ENSURE HIGH DURABILITY AND A CONSISTENTLY STABLE SPARK
IRIDIUM ALLOY HAS EXTREMELY HIGH MELTING POINT, PERFECT FOR TODAYS HIGH TECH, HIGH PERFORMANCE ENGINES
TRIVALENT METAL PLATING - SUPERIOR ANTI CORROSION AND ANTI SEIZING PROPERTIES
OUTSTANDING ACCELERATION, HIGH FUEL EFFICIENCY AND DURABILITY
ULTIMATE DESIGN, TECHNOLOGY AND PERFORMANCEGT500
FEATURES:
x8
FINE IRIDIUM TIP ENSURE HIGH DURABILITY AND A CONSISTENTLY STABLE SPARK
IRIDIUM ALLOY HAS EXTREMELY HIGH MELTING POINT, PERFECT FOR TODAYS HIGH TECH, HIGH PERFORMANCE ENGINES
TRIVALENT METAL PLATING - SUPERIOR ANTI CORROSION AND ANTI SEIZING PROPERTIES
OUTSTANDING ACCELERATION, HIGH FUEL EFFICIENCY AND DURABILITY
ULTIMATE DESIGN, TECHNOLOGY AND PERFORMANCEGT500
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