Reply to "header insulator"

I just re-read your Post and thought maybe I'm misunderstanding. But my exhaust tips have inserts, just like the silencers on dirt bikes 20 years ago. The Inserts are about 1" from the tip of the chrome extensions and go down into the chrome extensions about 6" to 8" and when viewed with a flash light have about 700 1/16" holes drilled into a tube that is about 1.25" diameter extending down into the exhaust tips toward the muffler. I don't think it's a question of ANSA Mufflers, it's probably an aftermarket item to reduce noise like the old dirt bike 'silencers' that had a re-packable fiberglass sound deadener. Used to be you'd take a screw off the final edge lip of the silencer, pull out the tube along with the fiberglass packing, wrap new fiberglass around it, push it back into the outer 'silencer skin' and away you go on the back tire only!! Only this seems like the chrome extension is the 'outer silencer skin' and there is no screw perpendicular to the flow of the exhaust gas mounted on the extension. Maybe special chrome extensions that gotta be ground off at the spot welds? Or can you put something down in there like one heck of a strong fish hook on a fishing leader for shark, i.e. strong? Heat up a long screwdriver under acetylene and fashion a hook? Certainly they're not threaded into the chrome extension....