Spark Plugs, NGK Copper High Performance, Set of 8, 1966-91 AMC, Jeep V-8P N: BP5ES Looking for the ultimate performance spark plug for your AMC V8? Tony Pinto, one of the foremost AMC engine builders in the world, says this is THE plug to use in your AMC V8 for street, street strip, or racing! They are detonation and foul resistant, safe for leaded and unleaded fuels, lasts longer than any other brand, and just plain work. Replaces fouled, cracked, or worn out spark plugs Ideal for ANY 1966 91 AMC V8 engine used for