340 Exhaust Manifolds on Early A-Body??
Well it's on the drivers side of the engine, that I know for sure buy on which side of the column it passes I do not know but I do guess it's the same on all 4 door '66 Darts with a column 904 and 318? Though if I have to take a guess I'd say abou 72% sure it's on the engine side of the column..