need to get some new plugs, was thinking about getting some ngk iridiums, running kwsc and j's headers good or bad?

 

I am using the Denso IK22 spark plugs.... The NGK with equivalent heat range is pretty much the same thing.... If you drive pretty hard a colder plug like the IK22 is good but if you have to spend a lot of time idling in stop and go traffic you might be better off with the stock heat range plugs.