1970 Blazer rear carpet hold down strip

[bigdon-70blazer]

This is out of mine, completely stock and factory. It is not like all I have seen but I have come to expect this in these earlier runs of the Blazer. I am trying to replace this rubber weatherstrip the is glued to this metal strip. I have included the pics. I just need a flat piece of weatherstrip rubber that is 2 inches or so wide that I can glue down as you see it. Any of you have a source for weatherstrip sort of close to this that you have used in similar or different applications? It would be great if I could find this exact part but since I have only seen this one, chances are slim...