I couldn't get the 78070 Headman's to work in a 62 b-body with a 440 in it. They hit the shock tower on the pass side and I think the power steering box on the drivers side, even after flattening & then cutting the interfering tubes out.

If you want a cheap set to see if you can get them to work with a 383 or for mock up, I'm looking to get rid of them. They're brand new except for where I had to flatten & cut them. Somehow I accumulated a bunch of these as I also have a used pair and a pair new in box.