Just cut one out of MDF or Masonite
Buy some 10mm foam from Clarke Rubber
Buy the vinyl colour you like
and stretch the vinyl over the top and staple it underneath.
Easy peasy.
Made one a few years back.
Then buy yourself a Mustang horse Emblem which you would normally mount on the Grill
and bolt it to the middle of the Tray
and it will look like it was custom made
Walla.
Moz
Check out the video,
The only thing I would do different is not to glue it.
From past experience I find that the spray on glue tends to loose its grip
Staples will hold it forever.
Here is a vinyl supplier in QLD I found for you.
Vinyl supplier in QLD[youtube]jEQcjiLRYyo[/youtube]