well long story as short as possible,....

i had originaly FMS blue wires....did a tune up and went with red...had red #3 melt on header....put blue #3 on and had no problems.

well today i went to put on my new red #3...and its touching the header again....put the blue #3 back on and its off....took some side by side pics and comparisons....the blue wire has a smaller circumfrance of boot then the red wire