I didn't notice that part of the reply.
Canfield Cylinder Heads are Cast and machined in the USA.
For certain the Canfield is very top quality casting. The CFE BMF Heads that the Outlaw Racing world is going nuts to get now are begun from Canfield Castings. The Steve Schmidt Conventional Nitrous Head for BB Chevy is Begun as a Canfield Head and then is Done by BMF division of CFE and then completed to their specs by Steve Schmidt.
I have used several of the Canfield Heads and have been very happy with them all. I buy my Canfields. from Competition Products.
I do not know if the version that Jeg's sells under the Jeg's name is the same or not.
Ed