So as many of you may know fitting a 350 into a yj has its problems. Mine has been that my heads have angled plugs, and every header i used had issues. Well the last ones i got fit except for the fact that the two middle plugs just about touch the headers. So i looked around and found the boots made of fiberglass for the wires. In reading the directions it says that if the boots touch the headers that header wrap is suggested. Well i want to be safe so thats what i did. So now i have header wrap and a wire boots. Well when i have run the engine the wire boots have started to turn black on the outside like they are burning (which they probably are) So does anyone else have these? Have they turned black on you too? Are they not working or am i ok? If these are failing has anyone else run angled plugs in a 350 conversion and if so what headers did you use?