Rant: Poor Customer Service
Well, despite having dealt with the unpleasant Phone Crone I did get the correct steering parts for the Dart, amazingly enough. Shipping was quick and we'll be able to move forward and put the Blue Beast back together again.
What was discouraging was the fact that I couldn't find another source for these parts and had to call Jim's back and place the order to get what I needed.
Good luck to anyone else who finds himself in a similar situation. Buyer Beware.