57 Chevy Trunk upholstered panels
I suppose someone, somewhere has just the plans you need; but I think you may be waiting for a long time before they do show up. Now saying that as soon as I post this someone somewhere will post them. But, save yourself some time and grab yourself some cardboard and scissors and make your own. Cutting smaller pieces and taping them together is easier than trying to fit one whole piece in. Good Luck.