Front plate/ water pump question

That's as quite interesting timing cover, where did it come from? I didn't see a small block one one AR's website.
I designed it and made a few of them. They were very, very cool, but kind of expensive so it took a long time to sell them. I think there might be about 5 of them floating around in the Mopar world but I've never seen one of them on an engine or for sale. Not sure what happened to them.