Original cast iron 4 barrel intake dated 4D 6. April 6th 1964. Correct for a K code 289 High performance Mustang. I used a wire wheel to clean up the upper surface and the gasket surfaces to show the great condition of this part. Primed it lightly to stop any rust. It will need to be hot tanked to clean up the inside. NO TEXTING. Call Grant 248-3six3-3954