Need input on Spark Plugs

What are the difference between NGK iridium IX and Denso IK 16 and IK 20? Im really confused donno which one to go with. Web is suggesting IK 20 for the MP3!!!! Im planning to get SPARKCO ignition wires too. Need some input guys.
Oh by the way any of you installed cross drilled and slotted rotors in your cars? Wondering any one makes the larger rotors for the rear brake. Front ones are damn expensive though seems like would cost me about $2500 Canadian!!!! :eek:
 
the ik16 is just a hotter rated plug than the ik20
otherwise they are they same and you can put either in
your mp3. I'd stay with the ik20 if I were you.

denso & ngk just make different type of iridium plugs but
both are good companies and feel free to buy from either.
I think you'd be hardpressed to find much noticable difference
between the 2 companies iridium plugs.
 
What's with these Iridium plugs? How are they compared to good ol' copper?

thanks,
Sam
 
MinnowGT said:
"snip"
I think you'd be hardpressed to find much noticable difference
between the 2 companies iridium plugs."/snip"

Your be hard-pressed to find much noticable diffrence between andy set of name-brand plugs.
 

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