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When the time comes to replace the plugs in my '08 Grand Prix, I have been kicking around using Autolite AP606 Platinum plugs, instead of the higher priced Iridium. It is a normally aspirated stock V6, mainly used for in town driving. Just wanting some opinions.
 

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Should be fine. L26/L36's are fairly low compression for N/A at 9.4:1, so I don't think you'll have any major issues induced.
 
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