Unfortunate accident w/new BB, need advice

[CPNE]

Here's the deal. My son got his rebuilt 402 back from the engine builders today. It has a $3000+ professional rebuild. This included block trued, rotating assembly balanced, 7 qt oil pan, high volume fuel pump, ground and cross-bored crank, new internals including pistons, rods, lifters, cam, aluminum intake, rebuilt heads with larger intake and exhaust valves, etc, etc, etc.

As luck would have it, during the process of unloading from pickup, the engine hoist let loose and the engine dropped from about 4 feet. It took a direct blow to the oil pan on the lift's support leg and hit the driveway hard. Fortunately driveway is packed gravel so there was some give and NOONE was hurt. The outward damage appears only to be to the oil pan.

Needless to say my son Brian (71402BB on this board) was devistated. He's waited 1.5 year to get to this point!!!

Here's my question for knowledgeable engine builders:
Other than replacing Oil pan and making sure oil pickup tube is intact, what other possible damage may have occurred? This engine was built right, it's essentially new and better than factory. It had no oil or other fluids in it, never run.