RE: CD ScaleDesigns Albatros CI build
Needle facing downwards is how I would do it, if it were mine. There will be a lot happening on the top side with the dummy engine and all. You could fix the silencer to the airframe with a bracket and use a bendy pipe as a manifold. See if it can be fixed perpendicular to the line of flight under the tank bay with the exhaust on the other side. Chris