Doug's headers fittment

I believe they are available in 3 versions.
I got the JetHot coated ones, thinking they might last a while...

But it became obvious quickly the coated will not survive some roadsalt.

Here's a fairly recent pic of the underside of my, at the time 10 months old Doug's Headers (but I think any coated header, even TTI's would have looked like this perhaps);