Gen 2 Spark Plugs 40 Shot?

I used Iridium's on my 05 with a 40 shot....but I am a loose cannon.:laugh:
 
CR9E is the plug of choice. Irridium will eventually lose the electrode, and the much cheaper CR9E can (and should) be replaced more frequently. A gap of .020 is a good baseline.
 
So what spark plug is recommended with a 100+hp shot. :laugh:
If just been using the stock ones with no problems so far.
 
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