Mopar A body headers on a 73 d100?

They were stepped headers kind of like the way TTI does some of their headers. They had 3/8 flanges, then started out with 1 5/8 tubes for a foot or so, then to 1 3/4 tubes all the way to a 3" collector. I know it was a big ol D series engine compartment, but they were the easiest headers I have ever put on in my life. I think I could have probably stood back and thrown them in place...lol. Hedman no longer makes them, and who knows if they still have the blueprints. I can't imagine that they were a big seller, so I get it. I went and dug out my old receipt from Summit and Googled the part number to see if I could find some for the D100 I'm going to put the 5.9 Magnum in, but had no luck.