These Heads come from a lost freight auction from Port of Long Beach. I have the rest of the engine and most of the exterior bolt on parts that i will be listing as well.Valve covers are included but not in pics because there still packed in the crate. Comes with both heads 4 cams and the gears and other parts to assemble them. The 456 cylinder head has 2 bent valves as seen in pics. I took pics of the blown short block so you could get an idea of what happened as im not familiar with engines myself. Im listing both together because im not sure what parts go to what heads, Willing to separate if you can tell me what to look for. A buddy of mine told me the cams have to go with the correct head. Short block not included with this sale but if your interested in it i will list it. Engine was built by Porsche Race division in Carson CA. It was sent to DR ing hcf porsche AG in welsach Germany. Blown then sent back to Carson were the freight was lost at the port and i bought it. Pankl Rods and Pistons were used in the build ,not sure what other parts were used. Thank you and feel free to ask questions.