Yeah mate. Utes are an Australian icon. No different to you guys and Pick-Ups really.
The manifold is a Harrop Hurricane unit.
Here is a direct link to it.
The manifold on my car is slightly different (has larger inlet runners among other stuff) as I am led to believe it is a prototype unit. I didn't fit it just purchased the car with it.
I know they have done some dealing over in the US as I've seen pictures of a couple of Corvettes running the Hurricane.
So if you were inclined you should be able to get one. Not cheap though. They are around AU$4000-5000 at the moment depending on the version you buy (LS3 and LS7 versions are more expensive.
Haha thanks. My car is a Holden VY SS Commodore. Comes standard with an LS1 and a T56 6 speed. Mines copped a fair few mods (as can be seen) and it currently makes around 445hp at the wheels. Those are old photos but it looks a little bit different now (has coil-overs so it's lower etc.) but they were the best pics I had lol.