I have Hooker Comp headers on the SBF in my '70 Mach 1. The coating which I guess Hooker did in-house looks amazingly identical to Jet-Hot's method. They have held up very well for many thousands of miles in the good weather drives. I'm convinced that buying new headers already coated is superior to re-coating older pipes. Compared to uncoated headers, the reduction in under-hood heat is another major benefit.