These are Spitfire Brand Headers made by Howard Johnson. He's somewhere in Arkansas. If you can locate him you could save a bundle. I paid $175 for mine several years ago.
If you are refering to the headers in my pics, then...um....no, you are incorrect with your statement.
These headers are made locally here in the Pacific Northwest by a local craftsman. If you'd like, I can even snap a pic of the jigs and fixtures used to make them.
Again, these are NOT the infamous Spitfire headers!!!!