Unusual super six manifold

Hellrats said
4041043 - intake manifold, RG-series 225 2bbl, super six, 1977-1980. This is what it was used on and used to look like. Nothing special about it. It has been modified. Probably to put a different carburetor on it.

View attachment 1715280341

Thanks for your input. It's appreciated

RustyRatRod said
Now, there are TWO that I know of that had that pattern. One was an old Mopar Performance cast iron piece, the other is from a company in Australia. Do you have a casting number?

Here you go. The sellers opinion was it was Australian.