Reply to "Exhaust wrap, paint or ceramic coating?"

You would use the thinnest sheet of stainless that will maintain its rigidity. It should not add an appreciable weight. I would not wrap bare steel as it does tend to trap moisture which will cause it to deteriorate quickly. If the headers are stainless wrap away. We used to wrap stainless turbo manifolds all the time and never had any issues with cracking from embrittlement.