1972 California 318 EGR

Why not use parts from a federal emissions vehicle that does not have all that stuff?
That is certainly an option. But I’m trying to get by without buying, painting and installing a new old intake manifold. Honestly there are no big telltale signs (maybe a tiny bit of idle roughness but not much) that I have open EGR at idle. But if there is a simple way to reverse what seemed to be a hasty and poorly conceived decision that Dodge made back then, I’d like to do it for the sake of fiddling.