rigid6 The NKG number for your application is R5670-5 you can get them at Advance auto parts. You will have to order them by the part number of 2298 as the counter meatheads won't know them any outher way. These are the plugs that most of the racing folks use and they are cheap. I have been told that they are a few mm longer and extend into the head further which gets a better ignition of the mixture.
