The stamped vin's were generally not full vin. In your case 8B209397.
8=1968
B= hamtramck car factory (7th digit on vin should be a 2)
209397 should match last 6 of the cars VIN.
DW34022920029
D=1968,
W=Windsor engine assembly factory,
340=CI,
2292= engine assembled on Monday November 6 1967
0029= 29th engine assembled that day
6-22-67 is the date the block was cast.
Left side casting number should be 2780930 340(-5). the -S is likely a -5. The 5 is a block cast mold revision number. This signifies how many times a block cast mold had been changed since the beginning and a marker for being replaced. I dont think I have seen past a -9.
But as 68formula said simply - if these numbers pictured match the vin plate it is the factory block and trans.
