TTI Dougs with black finish

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Sorry for the late reply! Plugs seem the same if not a bit easier. Getti g to the header bolts for retorquing after a few cycles is easier....

Good luck. You won't be dissatisfied with Dougs
 
Just as an FYI to those considering it, I used to do high temp ceramic coatings. One of the items listed in the supplier's warranty "fine print" was that they MUST be installed with stainless hardware not only on the headers themselves but on the valve covers above them. Rust drips and any resulting defects were not covered if they originated at the hardware.
 
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