Hey Tightwad,
Thanks for the info. The guy sold me Motorcraft plugs, he said that they were better than the A/C Delco, I'm not sure about that but I can say that the GAGT is really running great (knock on wood) I have'nt had this kind of power in a long time. May the plugs or the injector cleaning it just had. We'll see how these plugs hold up, I plan on pulling them at about 5,000 mi to check the condition.