340 engine help

71 Vintage, mid to 3/4 through the year judging by the sequence number being as high as (2)
I am thinking A body motor, "B" plant production in the Vin as well. The body it came from is no biggie anyway. The year and condition (Cylinder walls) over bore, cracked or whatever is really what matters 71 is a good year. That's about all your gonna get off what you read on the block.The only numbers you didn't get or see are the actual block casting date (opposite side of the block from the vin#) That is likely to be late 70 early to 71. Again no biggie.