Yeah, the manifold I'm making is just because I need the turbo located in a certain spot and none of the factory or 6bt manifolds place it in the spot I need it in. It ether hits the fire wall or a/c compressor.
I chose those materials just because they were cheap and way to work with, and would not cost me to much to have welded up. I won't attempt to weld the manifold. I don't want it to crack, after I have it powder coated with a thermal coat and then wrap it.