I would maybe try Red Head Steering - they might be able to help you. I am not completely sure if they do them in particular for these trucks, but maybe they could point you in a direction. Hope this helps.

1st Gen. Dodge Cummins 4x4 OVRTRQD Buick GNX #276
"If it died... we can fix it" | "If your not outraged, you're not paying attention." | "Do you know a large group of baboons is called a Congress? That explains a lot." ~author unwn