Isn't wRaped Pipes a little too suggestive for you? I mean, that hole in the middle of the muffler is HOT, real hot. The header is even hotter.
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If you wear polyester blend pants, wrapping your header and the start of your muffler with two layers of wrap will greatly reduce the number of ruined pants you generate in the course of a year.
Not stop it completely though, the heat soaks through the wrap at long stop lights, etc and it can still melt the material.