I have smashed a few sets of headers myself. Hookers and Mad Dogs are very similar in design and ground clearance. The set of Mad Dogs I bought were custom... I talked him into doing a set of 2 to 2 1/8" step headers. He was reluctant at first, but did do them. I told him I would pay the same amount and that I didn't need any collectors, he agreed. It took a while but they did show up. I have Blue Thunder heads, with the .400 raised exhaust flange and notched shock towers, so was a bit "tighter" fitting, but able to run the Hookers before. The Mad Dog were close, but I think he messed up on at least one tube. No way it was going to fit. I had to cut it and buy a J-bend and change it around some and re-weld it. I modified one other tube slightly. I bought them raw, and after fitting them, had them coated. I think I paid 675 for the headers, and 400 to have them coated including my 4-2-1 collectors, well the 2-1 were already coated so I didn't do those. Definitely less money than Hookers or REF. They worked fine and made good power, until I did a huge wheelie and smashed them on the landing. I tried a set of REF and they didn't fit either. I have a set of 2 1/8" hookers on for the moment, but will be switching back to the REF after I make a new #8 and modify the #4, they do have way more ground clearance.
Here is a file photo from Mad Dog, although these are not step, it is the same header design (like Hooker).
![](https://i.postimg.cc/c4P2w5Pb/mad-dog-FE-stang.jpg)
Here they are after coating, laid out, separate.
![](https://i.postimg.cc/ydt6RTKX/IMG-0053.jpg)
Here are the REF