I have A pair of 409 cylinder head casting #3814690 for sale. These would be the 409, 425 HP heads for 62, 63. These heads were taken out of service in 1970. There appears to be no cracks upon visual inspection. These heads are a true shop shelf find, have not seen daylight for 40 plus years. Would like to see $2000 for them. I also have a 1965 409 block casting number of 3857656, looking for $750. I have a GM 409 crankshaft #3788072 which is forged, $275 for this piece. You have a better chance of getting a hold of me by phone, TOM@ 414 232 0890. I CAN SEND TEXT PICS OF THESE PARTS, MY DIGITAL CAMERA IS ON THE FRITZ, THANKS.