Brazilian Dodge Dart 76 (similar to 69 usa)

Get your bows in line from front to back and install them in the pockets on the back of the headliner. Install the headliner with bows into each of the support clips. You may need some good rubber cement/contact cement for the rest. You have to stretch the front and backs over the little teeth/tack strips that are punched out of the inner roof structure then bend them back over. You may have to bend them out first. The teeth and a bit of the glue should hold the liner in place. Once done there just stretch the sides into place and cover them with the trim pieces. Use a hair dryer or heat gun to smooth out the wrinkles or let the car sit out on a hot sunny day.

Here is a video with some tips to help.

[ame="https://www.youtube.com/watch?v=KJU6m1ZkwQg"]Installation - Bow-type Headliner, Part 2 - Installation and Finishing - YouTube[/ame]

Good luck