Hey good article. And daammm those look nice!

One question... You mentioned that the paint that comes from the manufacture isn't a hi temp paint, and i agree. Seen many a header lose the paint in a matter of days.

However your saying to just scuff the paint and then paint over it with the high temp good stuff. If the paint underneath the good stuff wants to burn off, then what will the good paint stick to?? I'm thinking that the headers could've been stripped with paint stripper or even better, blasted with some sort of media. (Please note that these are just questions and I'm not anybodies authority on the subject)
I hope I'm wrong as i hate to see your hard work go to poop.

On another note, when i built my "Exhaust System" i used the VHT High temp 1300-2000° silica/ceramic aluminum and then "shot it" with my mapp gas blowtorch in an "even pattern" (um close enough??) after it dried to the touch. (managed to get the headers ceramic coated though$$$)
I then used the High temp clear over that then re-apply the torch to attempt to cure.

Have no idea how well this works yet though.

One thing to add. NEVER break your new FLAT TAPPET CAM in on fresh ceramic coated headers. ( so THEY say. ) Even though the ceramic coating is sprayed on with a flame gun they still expect a heating/cooling cycle once on the engine. The extreem heat thats generated while running your engine for .5 hour at 2500 to 3000 rpm can ruin the coating. expecially if your lean.
I would say the same for your well baked on ceramic Paint coating as well.

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Life long project. No it wont ever end....