Reading in the auction about the supposed engine noise, I'd sure be looking first at the flywheel! .
These auto Buick flex-plates were famous for cracking and the resulting noise was very similar to lower engine knock. .
I won on a few deals back in the day where you'd get a Buick cheap w/ a 'bad engine' and sure enough, one flex-plate later and it'd be a sweetheart! .
And with the early car story in the auction, is this even an early enough Vin for the possibility of it being true? .

~ Pete