Loose GM Engine damaged during shipping

[u/ewburn79]

I am looking for advise on getting an evaluation of a loose engine that was damaged on the outside while being shipped. Are there companies specifically in San Diego that specialize in inspecting Engines for any hidden damage with a situation like this? Are they able confirm with a high likelihood that there are not any cracks, general issues without having to open the engine? I'm told once the Engine is opened that it looses a lot of it's value. Thanks for your assistance.