I'm going to be putting a new set of headers on my big-block Duster. They are the Pro-Parts design stepped headers made by TTI. They will be replacing an older set of Pro-Parts design non-stepped headers. On the previous set I wrapped the headers. Over time they frayed and looked like crap. I like the look of coated headers and take this street/strip car to the occasional show. But I imagine coated headers don't do as good of a job with containing the heat. What's the experience of you guys?