I voted it solved my problem. The new box is a night and day improvement over the old one. I just completed a 2000 mile road trip and it preformed very well. This diesel just glides down the interstate at 90MPH. It is not perfect as it still has some trouble tracking on narrow back roads. But still MUCH better than the old box. A huge improvement.lol wow! How does it drive?
I can confirm that I did have the aluminum box as original. I can also confirm that my dealer changed it to the cast iron box with the 68507569AA part number on it. It definitely fits and improves the steering significantly.
My concern now is why FCA say it will not work. Is there a safety issue?