Slant 6 Turbo 68Dart Project

Well, I am banking on too much exhaust being lost. In the last couple days the engine bay is a lot louder than it was a few days ago. I suspect the exhaust leak worked whatever gasket was between the manifolds out, or maybe it's bent or something. I know this because you can hear a metallic rattle while the motor runs, and if you hold the spring on the exhaust plate/ riser door, the noise stops. I can literally hear the plate shake inside the manifold LOUD, plus coupled with the hot air blowing all around it, I'm really pushing for this being the issue. Tomorrow I will dismount the intake manifold again, and see what I can find out.