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a plug is a plug is a plug. They are all about the same and do the same unless you are throwing more spark to them ie. MSD, accel , High Volt coils ect. What your paying for in OTC plugs is the life of them. If you tune your car one a year just go with a good brand name champ,NGK, ect. if you drive it alot and don't like to wrench go with a high milage plug. If you have High Volt mods already then you should already know the answer to your question
Last edited by sniperdiver37; Apr 23, 2005 at 06:58 PM.