Early A's running magnum manifolds?

Thought I'd open this can 'o worms again. I've got a good set oof the 340 Hipo exhaust mainfolds. From the looks of things & what I've read, the right side would fit an early A without problems. Not sure about the left side. what I've read seems to go both ways, yes & no. What's the best flowing manifold for the driver's side? The Durango manifold? Mopar nocar said he couldn't make it work. Any other experiences ? Would be nice to have 2 1/2" pipes from the manifoldd on back & have read that that's a no-go with the 340 manifold.