Hi guys

Hi!,had my cylinder head off this weekend due to water in a piston anyway the cylinder head says 302 then 69 below that and the casting number says D00E and the only info we can find on this is thats its a 351 windsor?,the cars a 1972 302 that came over to England in 72 and its had 14 owners since then! not sure what the engine block casting number is though!
any ideas?