Awesome, your just the man I wanted to talk to. What is the 4sp spicer aux? Is spicer the brand? Do you figure the dana 80 would work on my wheels and bolts on the frame? Sorry if imw questioning too much. I'm basing my build on yours, your video is what got me started on this project.[/QUOTE]
The auxiliary trans. Is a Spicer 6041... yes Spicer is the brand.
I am assuming that your truck has the six lug bud wheels...if that is correct, I would recommend a medium duty step van like a snap on tool truck, laundry truck, some of them use a Freightliner mt45 it has the Cummins ,manual or auto trans. And the rear end with the six lug wheels ... some of the Cummins powered f700 also have the six lug wheels. Try to find a donor that has engine and trans that you want plus the six lug wheels .... that would give you every thing you need to do the swap.
56 f600 5.9 cummins 6+4