From when I first purchased my Thunder Ranch Spyder last March, I wanted to cover up the fuel and brake lines running along the floor of the cockpit (see first picture). To me, it just looked unfinished.
I drew up the design and measurements for the "tunnel," and approached the A/C contractor in one of my business groups, knowing that he would have a sheet metal brake in their shop. He's a car guy, too, and was happy to have it fabricated for me.
I spray painted the part in glossy black to match the frame, and my research here on the forum tipped me off about the black rubber matting from Lowes. I trimmed out the footwells with it for a more authentic look.
I'm thrilled with the way it came out, and it was a fun little project. Thanks to @edsnova for answering some questions from me regarding mounting options. :-)