Brand New GM Restoration Parts Big Block exhaust manifolds !   This is a pair of manifolds with the smog holes. Application is the correct casting numbers (#3909879 and #3916178) for the 1967 1968 1969 1970 Camaro and 68-70 Nova, and 68-70 Chevelle, will also work on a 71 72 Camaro and 71 and 72 Chevelle and El Camino  or Nova with a big block. Have seen them also go on a 67 Chevelle too .  Manifolds are dated E 28 8. These HAVE THE SMOG HOLES. (We have  both styles,  if you need them just ask )

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