Early A body 5.9 Exhaust Manifolds ?

Dana said

There is absolutely no trouble putting it on after the motor is in.

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There is more to it.
Magnum vs 340 has a port mismatch I need to make adapters for .
And everything I have read says the 340 manifold fits with manual steering and I have power.
So who knows what I have to make or modify for that.
Seems easier to do on the floor to me..