Yeah...not good!
Contact Bill and start proceedings on claiming for damage to the block. Take as many photos as possible!
You'll probably be able to weld it back together again, but it looks like you'll have to add a piece of Al on there as it seems from the pics that a chunk is missing.
But don't freak out too much, seeing as it is cast Aluminum, welding it back together won't be an issue as the mended section won't be any weaker than the surrounding parent material - an upside with Al!
That sucks though - seems like the shipper banged it against something, but you should be able to confirm this by checking the plastic wrappers for tears or evidence of the plastic stretching in the area where it would have been contacting the block. If the plastic wrapper is perfect then it's probably the warehouse that shipped you a damaged block.
A good TIG welder should be able to get you back on track!
Good luck!
