slakr correct, except you can also use the o'donnel o.s. compatible standards 77, 97, 99.

This is the go thread we want everyone to get the most of there go engines, so i wouldn't reccomend de tunning it with a standard burn room and then using two washers and novarossi plugs. The best situation is to put the turbo burn room on your novarossi then you are improving that engines performance using 1 plug and getting the best performance out of both of your engines.

e-dog, please send me an email at [email protected] we are replacing the long needles on any engine purchased within the U.S.