Has anyone seen or used one of these

I am pretty sure this thing was available overseas a few years ago. I think I was seeing them on ebay from Australia, and they said they could not ship to USA back then. I wanted one for a dirt cheap Magnum build with Speedmaster LA heads. Now that Summit shows them the price has gone up about $100, but I still want one. Hopefully he gets it so we can see that it does exist.