shorty headers

That would have been a good price for custom headers then. Are they still in business? I bought Headers by Ed in the early 90s and they were about $800. Jet Hot coated, which didn't last the 5 years of use until I went back to manifolds.

Pictures on my website, about 3/4 down on this page.

Coating companies in consideration this time are Zircotech, Swain Tech, Applied Plastics. For a resin based coating, I agree that internal coating makes sense but for different reasons. Zirconium based coatings have to be applied with flame or plasma method so really can not be effectively done in the tubes except sometimes the entry.

http://www.heritech.org/cuda/mgcudat.html