Hi i'm looking to make my own turbo manifold for my Honda Civic EP3. I will be using one of the two designs shown below. These exhausts are both tig welded, i'd prefer to mig weld it as I have access to mig and all the rest of the equipment needed also my uncle who will be helping me uses migs every day. Is there any downsides to using a mig welder aside from the look of it?