Real talk: exhaust manifolds on 360 Dart

Yeah, I don't know people swallow the BS with those things. That's not even a performance carburetor. The 1405 is the performance piece and yet the 1406 out paces it in sales probably three or more to one. People latch onto to any stupid marketing. No offense.

None taken! The previous owner put it on, I'm just getting started on this journey. I used to work on these all the time, but that was 30+ years ago. There have been a lot of new things brought out in that time...as I'm now learning. I'm always open to new ideas or suggestions, that's why I ask questions here. :)
I doubt there much worse than 318 manifolds, probably 5 hp less at worse, I wouldn't over worry about on a mild early A car.

There's another shootout that I can't find anymore that included magnum manifold to and was basically same as the 340. The best was one 340 and one magnum I forget which on which side probably magnum on drivers and 340 passengers.

Well, crap...now I have to consider Magnum manifolds, too? :)

Do they even work on an A body?