I have the OBX header on my car, I had it a year on the car then when I removed it to replace motor I wrapped it in fiberglass, it was a smart move, it helped with under hood heat.. I noticed it... Hot boxed just a little less...
If you wrap it which I endorse I strongly suggest being careful, that stuff was a pain to remove from hands and clothing, I tossed out the clothing I wore that day , I did wet it down well when I did it, I suggest rubbing lotion on your hands before you start.. I went with White, but I suggest black since I have had these in 3 months they are changing color to blackish anyway, so... you get the idea..