Aluminum 5.2L Magnum Block - CL

Is there anything about the block that makes it "Magnum"? A lot of the later Mo-mills are coming with both mount systems in place.

Looks like a aftermarket race block to me?
Aluminum small blocks have been rumored before.

Regardless, I'd rock it if I had the dough. I wouldn't care if it wasn't max horsepower, the handling effects would rock.