1968 Dodge Dart GT Sleeping Beauty?
I had to determine the centerline on the old headliner. Transfer the bows in order. Some are the same others very a little bit in length. They are color-coded on the ends, but it’s easier just to do it in order.. you have to cut the cloth bows 3 inches from the end of the metal rods. This allows them to be inserted easily and should help take wrinkles out.
So if a rod is 48 inches half of that’s 24. That is your centerline. I marked the outside edge to outside edge on the headliner. Then I came back several inches up to three. Then you feed the rod through. I’m cutting my relief slot, say 21 to 22 inches off of the centerline off a metal rod that was 48”.