I am in the process of installing a Procharger P1SC supercharger on a 05. Everything is going together great and I have not ran into any problems as of yet. But something came up today and I have not been able to find any info about it. I am wanting to change the plug in the car so everything will be safe when I pour the boost to it. Could someone give me a part number for 1 and 2 step colder NGK plugs? Any help would be great. Thanks