Yeah!
How 'bout that cracked bock-head that ran for office...
'sorry'
I know that Detroit Diesel Rebuild West ( in tuelly (sp) Utah) allows weld repair in the side of series 60 blocks, as long as they are not larger than fist size.
Welding the block requires preheat and post heat over a period of time, but it would not be too tough, maybe use the barbeque? With a large 'tinfoil hat'!? ('sorry' again)
I wonder if these engines are cast in scrap steel from ship breaking? If they are, they may be more weldable than we would ordinarily think?
Scott E