Any headers that are wrapped should be DRY DAY DRIVEN cars only!!

I've seen tons of absolutely rotted headers that were wrapped. We bought a brand new set of headers for my buddy's 390 Javelin, two years later it had exhaust leaks, and as he was about to pull the engine we were astounded- we grabbed the wrapped headers tubes and they crushed in our hands!!! It was like they were made out of paper in spots.
We learned later that headers that are wrapped on daily drivers usually don't have long header life!!