Exhaust system - this is a 2" system from Maniflow, it may not be stainless steel but it is a quality bit of kit. There is also a 2inch bore centre pipe (not pictured).

This is the downpipe for use on the turbo, again made by Maniflow. Rememer you can't use an LCB on a turbo! Again this part is good quality and has a knuckle joint as you can see.