SD421, I don't question if it's faster to fabricate them with a jig, I know it is, I am fully aware of how most companies build headers, this isn't your average header company though. The original comment asked of Ron by another poster, which still hasn't been answered is, If the headers were tacked together in the jig and shipped to the man who has already paid for them, could he finish the final welding himself? Obviously he needs them in a timely manner and is willing to finish weld them himself if he can just get them in his hands finished or not. This is the only reason I even posted on this subject. I really don't want to be involved in the mess since I don't have a dog in the hunt, I simply stated if they were tacked together and shipped could the person asking the question, finish them himself. I answered that I believe he could, that's how I became involved in the post. And now that that is cleared up I'm done with the post.
Larry, even if the headers are copied from HO original pattern header there was an original built sometime, somewhere, by someone without a jig. It seems to me that someone from HO stated he farmed the job out to a header company and I'd guess they kept the first set of jigs. I know that is a fact that someone made a header and used the actual car for a jig initially, then after the header pattern was made and final welded, a jig was made from the original pattern. I'm done posting on the subject and I feel sorry for the people waiting for 5+ years for headers. I know I could have made a pattern and made my own tri Ys in the last 5 years. Good luck to all involved in the saga, I hope it turns out well for all involved........