i have a 1965 425hp 396 for sale,,,casting #3855962,, dated feb 19th 1965,,, head # 3856208,,, just had them gone through at a reputable machine shop,,was going to race motor until a friend told me what i had,,,,now she for sale!!!!! offers accepted,,,, but i know what i've got and will not give it away,,,,,Cheapest one i have seen sell online was $12,500...