THE MOLDING THAT GOES ACROSS THE BACK SEAT TOP

I have a 1965 dart 270 convertible and it is missing the aluminum channel on the back seat for the boot cover, as you can see in the pic mine is missing. Any ideas on what I can do to make one? Please help!! thank you , TomView attachment 1715791088
I have one Im pretty sure is extra. Ill have to go to upholsterer on Monday to verify.