plugs
06-11-2009, 06:57 PM
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plugs
Can I use NGK4554 plugs in my Supercharged Mustang? They have a reach of .750 inches. If not, what plugs should I use? My tuner, Crazy Horse Racing, put in AC Delco 103's, which are old fashioned coppertopped, and they have to be changed out every 7-10000 miles. It's a pain in the ***. Thanks in advance guys.
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