Well as some of you may know my uncle is a mechanic and often takes courses to update his training, well today he was telling me that NGK had issued a TSB and gave me the TSB I will have them scanned in tommorrow and you guys can see but apparently since all the new fuels contain ethanol and since our engines aren't designed for ethanol we lose mpg and it's bad for emissions. The TSB says to lessen the gap by .010 therefore since ours is 0.42 it would become 0.32, although it says never to lessen it less than 0.35 therefore our gap would need to be changed to 0.035.
Therefore change your gaps to 0.035, it also talks about people not adjusting the plugs after adding CAI or short rams with the increased air flow it leads to leaner conditions blah blah blah, I will scan them in. It's said to improve mpg and power and also for every 50hp increase you have to increase the type of spark plugs to two ranges cooler or something anyhow once I scan the sheets in you guys can tell for yourselves.
EDIT: Will be posted tommorrow June 11, 2007 at around 2pm-5pm
EDIT2: As promised Pictures are posted below