1974 Dodge Dart Magnum Swap
I do not believe the converter guy was confused. I gave a friend the balancer from my Scamp(Magnum 5.9. Do not what year) do to his balancer starting to come apart. His 5.9 Magnum is in a 72 Charger. Do not know what year his Magnum is either. He called after installing it and stated that is was for an earlier Magnum. His was a" later motor". He happens to be a Dodge Mechanic. That was a couple of years before I had my 408 in the car. So I just blew it off and I got it back. My 408 is internally balanced. You can order the assembly Ex or Int balanced.
Again the best way to resolve the issue when building a 273/318/340/360la/5.2 magnum/5.9 Magnum ex or int balanced, or a 408 stoker ex or internally balanced LA or Magnum is to get the Professional Products Part #80012. For $97.00 you cannot go wrong..
It took me about 2 years to get all of this worked out do to different opinions. So, I am sticking to my story. :)