Alternate package tray materials for '68 notch back Barracuda

Hi all,
I have not yet removed the package tray from my '68 notch back Barracuda. It is faded and I am considering options for replacement. I am not sure I want to replace it with a stock type or make my own out of a hard board material.
With other model Mopars using a metal package tray, has anyone ever fabricated one out of metal for this model year?
Thanks in advance.

Very impressive! It looks great. What gauge/thickness did you use for the shelf and seat back? In the very first image, it looks like there are two layers. Did you keep the original tray and just slide a metal layer on top of it?