Biohazard
1/2" birch plywood. I chose it over oak for ease of sanding.
First cut was a simple tracing.
Used a beastie of a file to start, then a palm sander to even off the bevel.
Punched out the mounting points with a 3/16" drill bit followed by a 3/4" wood bit. I just eyeballed how deep to go for the recesses.
So lets have a gander at the really wack slab of plywood that came outta the car. Here's the side that was covered with carpet...
...and the black side.
Due to it's smell, I was so happy to toss that thing on the heap.