Would the answer related to the front spindle/hub bearings be located here on page 37 of the PDF?
https://www.gmheritagecenter.com/doc...olet-Truck.pdf
For a brief moment after reading this, I thought that you could fit the spare HD hubs shown in the photos directly to my axle, but that would not be possible due to the fact that the king pins and spindles are larger in diameter...