1971-72 340 Engine/Block

Did you ever find a block? I have a tanked and mag'd block will need a .030 bore. Numbers are.. Drivers front pad: HM340R 37000187
Pass side pad: 2A119682
The cast numbers by the mount boss: 6 17 71
Clock like stamping points to 2ish
Casting number : 2780930-340-8