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Investigate Jet-Hot Coatings. You might want to talk to them. They coat both inside and out. Lowers heat in the cabin. The attachment is of headers that are 10 years old. I know of no other treatment that lasts as long as these have for me.



I agree with Belvedere67, Jet-Hot inside and out. They will last a loooong time and look good as well. My brother-in-law did this on advice of a gentleman with experience with it who also said "you don't need to buy expensive headers, get some cheapies with good flow and they'll last forever" and they have!