Interchangeable CUDA/DART

Hello everybody.. I am building a 1969 Dart convertible(changing it from 6 cyl auto) I have a 1969 Cuda as a donor car (340 engine, 4 speed tranny, rear, bell housing, pedals etc..) Before surgery does anybody know if all those parts will interchange from the Cuda to the dart? I've been told by friends it will. However You people are the experts..Phil