WANTED 1968-70 340 Exhaust Manifolds
I bought a pair of the repros that Accurate reproduced, and they are really nice. They had casting numbers on them, but they got threatened by Chrysler, so they ground some of the digits off. They are a nice quality casting, but Tom doesn't screw around with garbage. If Accurate sells it, it's good stuff. Everyone that has looked at my engine has commented on the manifolds.
http://www.accurateltd.com/340-Exhaust-Manifolds-Pair_p_9-162.html#
They don't have the provision for the flapper, so if you're after that, keep looking for a used pair.