66 Dart Headliner Help

Sounds like you may have a 4-door liner Rod, if your old liner had 5 bows and this one has 6, there’s a problem & the bows may not line up with the car, do you have your old liner to compare with this one? I wouldn’t proceed until you can either measure the spacings on your old one or from another car…you could measure the mounting points as well….