Hi, i got some NGK iridium ix BKR6EIX spark plugs pretty much for free.And was thinking of using them in 03boxster.On there web. site the gap is .032 . Are these pre.gap or in other words are most high performce spark plugs pre.gaped already to your model vechicle out of the box?And if not what would be the gap be for this preticular spark plug. thanks.