Another thing i thought of; Is it ok to use exaust-hose for part of the exhaust system? It would be easy to make a pipe behind the turbo with the cone-shape mentioned earlier by tapage. And in then use the heavy-duty hose from it, to right in front of the clutch-housing (where it's clamped to a bracket..)
That way i can get a vibration-free system further back and less heat will transfer to the engine-compartement?
Would save me a lot of bending and welding..

I'm talking about hose bespoke for exhaust.. not silicone or anything like that.