For us, the single finest identifying feature of the Boss 429 Ford is the valve cover. It has a unique appearance, and distinguishes this engine from all others. For that reason, we tried to make our cover as close as possible to the original. There are some minor changes on the inside (for rocker clearance), but the outside is like OEM. These covers will fit any original Ford head as well as our new Boss Nine pieces. They are available in any color powder coat (pictured), or natural as cast finish.