The plate where the stock b13 radio sits would be a good idea.. but for that small of piece to go in production and having to wait for it.. u might as well buy a piece of metal and make a template. Cut out the holes, buy a small pice of carbon fiber "lay" and lay it over and silicone the plate to the back of the center piece. This is what i did and turned out great. I do have a perfect template for 3 52mm gauges to fit perfectly. Maybe jose aka SERpriz can take the template and cut some pieces out at work if people would be interested. I can post pics up of my final install of the 3 gauges with the template i made.