1968 Plymouth GTX top boot.

[Mattfi1]

There is a long piece of piping sewn into the one side of the boot (RED) that slides into the trim piece on the upper part of the rear seat. There is two button push clips (BLUE) that clip to the rear interior trim side panel. Then there is the plastic clips (YELLOW) that clip over the outside trim on the Dutchman . Hope this helps.

 

[munger77]

Thanks Mattfi1,
I've searched the internet for a long time, and these are some of the details you just don't get anywhere but from people like yourself.