[DavidG]

Since you are using your own material, you can theoretically order a copy of the original engineering drawings of the trim panels that you need from the Benson Ford Research Center in Dearborn. The panel foundation cardboard is no doubt available from a variety of sources and your local upholstery shop can make what you need armed with the drawing(s) and the foundation cardboard.

You'll need the part numbers of the panels that you need which are available in the '32 body parts catalog.