1968 440 Block without VIN

Just bought a ’68 440 block/crank/rods/pistons setup as a spare to stick in the corner of the garage (or maybe use the crank in a 400) and can’t find a VIN stamped in the block. Where should this be located? I was thinking along the bottom of the skirt just above the pan rail on the passenger side.

It’s a 2536430-2 version, stamps on the i.d. pad are D440 for 1968, HP2 (I thought it was only supposed to be HP?), the numbers 3 and 28, then an "A" on the driver’s fender side to indicate .020" over. On the side, the "sundial" is pointing up at 12:00, the N (night shift?) is selected and the date is 1-27-68. Is the VIN cast on, or stamped in like a transmission number?

B II

Just bought a '68 440 block/crank/rods/pistons setup as a spare to stick in the corner of the garage (or maybe use the crank in a 400) and can't find a VIN stamped in the block. Where should this be located? I was thinking along the bottom of the skirt just above the pan rail on the passenger side.

It's a 2536430-2 version, stamps on the i.d. pad are D440 for 1968, HP2 (I thought it was only supposed to be HP?), the numbers 3 and 28, then an "A" on the driver's fender side to indicate .020" over. On the side, the "sundial" is pointing up at 12:00, the N (night shift?) is selected and the date is 1-27-68. Is the VIN cast on, or stamped in like a transmission number?

B II