I did a quick recon on the axles to see if I could ID them. From the shape I think they are Dana 30 axles. The front axle has some numbers stamped on it but they are badly rusted. The back is a little better. I found this stamped on the axle tube:
I have no idea what that means. I will have to research this and see. I kinda was hoping for a part number but that does match up.