Georgem, Metric Motors sent me a new cadmium plated one when they returned my rebuilt engine, along with the old one, which appeared to have a black oxide coating on it. Along the top where the bend is, there is some sort of asphalt embedded foam, like elsewhere in the car. I'm going to use the plated one. You can have the black oxide one if you only want to clean it up and paint it. The problem is, it will probably cost the price of an engine to ship it from Canada to Australia. I can measure it up and give you the dimensions so you can make one, if you can't find one.
It's part number A6152505156 from Mercedes Benz and it's listed as 26.83 Euro without VAT.
It's just a piece of sheet metal with one right angle bend.
Tom Kizer