It 24s way to cold for a six pounder ,no? I ran 22s on my six and worked perfect.

 

I have had no prob with my ngk's, but I have seen a rough idle at times though. I am thinking of switching, but I will wait until spring!

 

I used to run the Denso's until Brisk came out in the summer of 04. I run the Brisk GOR15LGS and reccommed them to everyone. I didn't dyno the truck after installing them but others have and picked up power. I experienced smoother idle and accelleration which i'm sure improved my power.