No I am not and once again , I DO NOT give a rats rear end if the manifold weighs more than a header , and the performance difference is not an issue.
I would just like to know if they will fit .
If no one knows because they haven't tried that's fine and just say so, that is better this stupid pissing contest over the weight of a header vs. a cast iron manifold .
I asked julesdawiperman the question and will report back , he helped build a 68 Dart and I'm pretty sure they ysed the manifolds...