The vehicle is a 1966 barracuda where do you suppose these go?

P
Still fuzzy on where they go..
I looked at rear seat area.. hmmm..
A picture is worth ...

My son's 65 is covered up and blocked in, orbit send a pic. Fold the rear seat down and they go curved side against the inner wheel tub and holds the carpet down. Then I think there is a long flat piece of trim that connect them left to right.