Behind The Scenes Manufacturing Check out this behind the scenes video we put together for you to see what it is we do here at PRP Racing Products. This is only a scratch on the surface of what we do every day, be sure to subscribe to our Youtube channel if you want to see more. In the video, we give you a brief overview of how we manufacture a few of our products. We start with Auto-Cad for most of our designs to ensure that they will run correctly on our machines, as shown with the valve cover simulation.