The block number looks good but the number is most likely DOZE-6015-B or it could have been a DOZE-6015-C depending upon build date. Looks like he has the right block. Have him check the rear of the block were the bell housing mounts to the block. There is a flat area or flange that should have the VIN on it. Ford's stampings are not as clean as GM's and look funky so don't be alarmed if it looks like the numbers are out of alignment.
definetely post the block and vin if you can find it over at the Boss registry as Denis above has stated.
www.boss302.com someone over there is always looking for a DOZE block.