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well when i prochanged my v6 and ran bosch plugs and after about 3 weeks my car was not running right missfiring a lil and that had happend 2 times now so i am going with autolights that is what i run in my 5.0 so.
the guy at advanced auto said if i put bosch in my car i would be retarted and i said wht about ngk and he said they are more for foreign cars so i went with motorcraft