Hello blkulis,
This might be an option to look into. I am going to look into the internal coating for my shorty headers.
I did not know that had this-Checkout the video- It is internal coating-They recommend using this first:
Rust Remover - Eastwood Rust Dissolver
Item #16037 Rust Dissolver Brand: Eastwood
http://www.eastwood.com/eastwood-s-rust-dissolver.html
Use in the inside:
Eastwood Hi-Temp Internal Exhaust Coating w/extension tube
Item #13795 Z Brand: Eastwood
Interesting, thank you.
http://www.eastwood.com/ew-hi-temp-internal-exhaust-coating-w-extension-tu.html
Use on the outside after rust dissolve process-
Factory Gray Hi-Temp Coating Item #10395 Factory Gray Hi-Temp Coating
http://www.eastwood.com/factory-gray-hi-temp-coating.html
I have used this on 1971 Mustang-
Silver Exhaust Paint Set Item #10020 Silver Exhaust Paint
http://www.eastwood.com/silver-exhaust-paint-set.html
mustang7173