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Old 04-15-2022, 07:29 PM
tom s tom s is offline
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Default KRE Hiport spark plugs

What is a good plug to start with for these heads?Tom

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Old 04-18-2022, 06:11 AM
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mysticmissle mysticmissle is offline
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ngk 8/9 for pump gas

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Old 04-18-2022, 08:41 AM
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RA462 RA462 is offline
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I'm using the NGK -9s in both of my cars.

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