Nice truck Tyler. For what it's worth, I have 2 original DANA 41 rear ends laying in my shop. You're a long way away. But thought I'd mention it. I can't tell if you still have your original spring hangers or not in those pictures. The stocks were 3.73.

I agree with Mtflat, never heard of a "heavy half" in our period trucks. Sounds like NumberDummy cleared that up.