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Discussion Starter #1
what plugs should i run in my iron GT-40's? i want maximum performance and it's been a while since i have changed them so i would like to get it done. please give me some part numbers, as well as a good gap for NA applications. thanks

ps-what should i gap them at for a 100 shot?

Arron
 

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Discussion Starter #2
ttt...thaaannkkssssss ;)
 
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