[Richard and Rhonda]

Wow, that is quite an undertaking. I know that Newell used Rockwell axles on my vintage, but I suspect something completely different for yours.

From a little bit of my own research I learned that Rockwell did supply different hub configurations for the straight beam axle on mine. You could fit the axle with a couple of different kind of drums and with disc setup also. You could also specifiy sealed or wet bearings. The point is you may be able to find front assemblies that will mate to your axle that have the bolt pattern and discs you desire,

When you spoke of the rear, were you thinking of replacing the entire axle and housing including differential?

You may have your best luck talking to people in the salvage truck business. If you have the dimensions and axle capacities that you are looking for along with the final drive ratio it will give them something to work with.