Not all NGK spark plugs intended for "street" autos are non-resistor type. My Jaguar V12 uses an NGK resistor plug. I would think best to contact NGK before purchasing.

From their website:
Technical Support
hours: 8:30am - 5:00pm Monday-Friday EST
tel: 1-877-473-6767 prompt #2

http://www.ngksparkplugs.com/About_nGK/contactus.asp