make sure the turbo manifold is TIG-welded using SUS304 metal so it wont expand under extreme heat. It may not be strong as cast iron but it hold it places.
other kind of metal will expand and may crack easily.
I am not so active on your forums but i have looked here from time to time. I am from Australia but i have a lot of friends who are from KL. I have come up to KL quite a few times over the past few years as...