Magnum Exhaust Manifolds

Hi!
I'm looking for a well used set of Magnum exhaust manifolds.
They will fit in my 1964 Dart and replace the slow 273 manifolds.

I read from Mr. Ehrenberg that early (1998-2000) Durango, Dakota or Ram parts use a bigger 2-1/8in dia.

They are hard to find in Germany.