Originally Posted by
DMC-81
Well, that must be frustrating. Although, fixing 3 upside down manifold gaskets was not wasted effort. You should feel the difference driving it afterward.
Because of the estimated location of the residual noise and what you found with the exhaust gaskets, I wonder how the 2 crossover pipe-to-manifold gaskets, the cat-to-crossover pipe gasket, and the condition of the flanges were? There should be 2 metal ones and a fiber one there. Were they present and relatively new as well?