1a. S&P's accessory kit adds a factory GM power steering unit. In some applications, there's enough room to have a self-contained fluid reservoir, but in this truck the reservoir had to be mounted on the core support like factory big-block trucks had. The factory steering box is connected to the pump using supplied stainless steel braided lines. It's important that the lines be rated for 19 inches of vacuum, not pressure, and that these smaller GM power steering pumps use cold climate fluid. This keeps steering noise to a minimum.