Found 71 340 block

20 over from the factory that's something new to me, what might dictate that?
From January.
Doesn't look like an answer is forthcoming... :rolleyes:

I don't know but I'll take a guess.

To salvage a bad core that was set aside after inspection and then later re-bored to 'clean it up'
or
Some factory recon deal like "Mr. Goodwrench".
Warranty re-work/replacement