1930 Pierce-Arrow trunk and trunk rack location

I am looking for a suitable trunk for my recently acquired 1930 Pierce-Arrow Model B 5 passenger sedan.  The trunk rack is 16 5/8ths inches by 35 inches.  Ideally, a metal trunk in decent condition which would have been used on a Pierce-Arrow; does not need to have fitted luggage.

The rack itself seems to be mounted very close to the body.  The issue then becomes the curvature of the body.   On other cars I’ve looked at, the rack is mounted further away from the body and more over the rear bumper.  If I try reversing the rack, the brace doesn’t sit correctly.  There are metal brackets on the car body itself, approximately where the trunk rack is when folded flat.   

I am wondering as well, as the car did not come with a trunk, whether I have the right rack.