Over my head…

Thanks for responding. I made a plastic retainer that i fitted under the body lip, then sandwiched the liner material to the body. Then I will only be putting the top and curtain under a different retainer which I made out of aluminum strip stock. When I got my Dart someone left off retainers and just screwed the liner, top material, and the curtain under the belt chrome... It has been a timely job....
I have no clue how the liner goes in the mechanism area. Will just let it hang for now. Unless someone post photos of this area. It appears that I will have to estimate where the drains go. My liner was made 15 years ago by the guy who did my upholstery. He took my old liner apart and copied it.