Barn find 72 340 duster

I still have not discover how they looked. It appears that they may have been two pieces I have not had the time to remove the exhaust manifold. It looks as if the remaining shield on my engine is under the manifold as if what is not rusted out was like a gasket. I am just going to guess at this point that you have the top part of the heat shield and there was a lower part. I will take the manifold out in the next day or two. My duster as rough as it is looks as if nothing more that maintance items were replaced. I think it may have the factory clutch still in it.