Just to help others, custom work can get expensive. If you can buy a new exhaust manifold for your specific engine, just cut the exhaust manifold flange off and build off that. i.e. To make a turbo manifold. If need be start with flex tube of your preferred exhaust size and bend it to get your desired turbo location.
So I have recently acquired a '99 kia sportage, did some research and found out that the 2.0l doc fe engine or fe3 was offered in japan for the 626/Capella. Now my question, what parts from the FET engine could I use, mainly the turbo exhaust manifold. I'm not shy to doing custom but if I can get bolt on parts. Why not. Cheaper, is most of the time better. Unless it's cheap steel.