Conv Trunk Divider Panel

I got the well liner in I am talking about from the seat hooks down.
They may have came with nothing? I have never had anything and I have had this car since 1991
but it has seen several tear downs and re builds before me and after me.

I marked in red what I am looking for. you have to squat and look hard to see the seat springs
from the trunk. if they came with nothing that is what I will do leave it out.
but it came with something I will try to replicate that.

My coupe has a carboard panel here and I think I could cut a coupe down but I will make one if it came with one.
I was going to hang some black carpet? black plastic? attach something to the back of the seat.
Then thought NO I will do what MA Mopar did in 68 and live with it.