what will prove to you that this is my engine?
Uhhh . . . Since it's not mine, I couldn't care less who owns it.
and i think you should do the same. with a big block....cast iron hands down.
But back to the original question. Since it's "cast iron hands down," I'm still wondering why, and how do a half dozen photographs support that point?

Or perhaps the only purpose is for us to "feast our eyes" on this purty motor?