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I have a 1998 pontiac formula LS-1 and all bolt ons with a 125 wet shot zex......I have been told to use the tr6 plugs but is there anyhting else i need to know such as gap ECT
35 is the gap you will want to use and they should be pre gapped to 35 out of the box but you will need to check them to make sure thats what they are at.