My Sanderson headers on the 27 were JetHot coated 20 years ago because at that time Sanderson wasn't coating their own, but sending them to JH for this process. It held up great. In fact, I actually could have reused them on the rebuild I am doing on the car, but they had a few dull spots (mostly from sitting in the rain many days while I was at work, and me putting a plastic tarp on the engine before the headers had cooled, melting the plastic to the headers. So I just had Sanderson recoat them.

Based on that one experience I would have to give them a thumbs up. I do not treat my stuff particularly gingerly, and if they held up to that kind of use I think it is a good product.

Don