I need to change the plugs n wires and I looked at ngk bkr6eix-11 plugs n i noticed they are 1.3mm not 1.1. Will this make a difference or should it be fine? Right now I'm pretty much stock except exhaust n air intake. I plan on putting on a new header, intake man, bigger cams, rods, pistons, throttle body, n fuel injectors in the next couple of months. Any suggestions for which plugs n wires i should put in?

 

NGK blue wires will be fine plenty of high HP cars run them with no issue you'll be fine. as for plugs NGK again.