Ok, now I get it. Thanks to everyone for the clarification.
Based on what's being said here, I could do the exact same Dana 60 swap in this 3600 that I did on my '59 Apache 3600, am I right?
I ask because the Dana 60 swap I did was really pretty easy. The most involved part was widening the spring perches, which took me a few hours with a grinder and my mig welder. Other than that, it was pretty much a bolt-in operation.
Chris