I`m doing it now to the second set of headers. 1st. was on a 600horse 406 chevy, no problems, and it worked fine. the ones I`m doing now are on a set of chrome, used tti r/b victor headers. the most important thing is start tight against the flanges, keep them tight all the way, and tie them down in a few places and at the ends. you can paint them and the straps w/ high heat paint, has worked very well for me. do wet the wrap before you start, and keep it wet, wear long sleeves, because your going to get the fiberglass in your arms and hands.------bob