Originally Posted by Houligan
Sorry:o IIRC was short for If I Recall Correctly, I just remember seeing on here before that some of the 2003 heads had changed and had more threads in the plug holes than the ones on my 2002.
Oh that's right , I haven't seen that in awhile. I'm pretty sure all 03's were changed but can't verify. It might have been a mid year mod. They tend to do that sometimes, to use up what they have on hand first.