strike force
If you are in doubt about the original of or quality of material, then ask for the name of the foundry/manufacturing company and the complete address in the USA where it originates. No answer is the answer.
For crankshafts, heads, intakes, pistons, rocker arms, connecting rods, there are only a very few USA manufactures. But they all have an address and should be easy to verify.
If a head company doesn't think enough of its own product to sell it with only quality components, that doesn't say very much for the castings they make.
On the other hand, some quality USA manufacturers, do sell overseas products also. Manley H beam connecting rods were sold for years before anybody questioned the origin of the forging. But when Eagle, Scat, Joe Blow, started flooding the market, they were exposed. Reher Morrison still sells the Manley name H beam rods like they are USA made, in their engines and kits.( Just my opinion on this. Correct me if you have facts otherwise.)