Heat wrapping aftermarket headers/bypass pipes?

[The Radium King]

i've thought about it also. regarding hp, folks will say that the gasses stay hotter so move faster and increase hp, but for me it was all about keeping as much heat out of the engine bay as possible. i've heard that the headers don't last as long as a result, but at $69 for a set of ebay wonders, you can afford to wrap a new set every spring.