4x4 pointers

[LuckyLightning]

First off let me say that I don't know a whole lot about 4x4 stuff, much less making a 2wd-to-4wd conversion. I'm the type that learns as I do it. So I have a few questions that I'm hoping will get answered.

- What are the pros and cons of using a tranny and seperate transfer case versus using a tranny with a married transfer case?

- Will I have any towing advantages to using 3/4 ton axles on a 1/2 ton frame?

Here's what I am planning to do:
I have a 1964 2wd truck, I want to take the axles and power steering from a 3/4 ton 1984 suburban and toss them on the '64 truck. I'm hoping I'll get a little more towing/off-road advantage by going with the 3/4 ton... plus I'm getting the suburban at a really good deal. I imagine the transfer case and tranny are one component (I'll be going to look at it this afternoon). I'd also love to take the leaf springs off the back of the suburban (again, assuming it's not coil springs on the 3/4 ton) and replace the control arms on the back of the truck. I have no idea if there are even bolt holes on the '64 frame for that.

So am I stuck with the original control arms and coil springs on the pickup? Am I better off trying to find a 1/2 ton setup and pulling parts from it?

I'm totally flying by the seat of my pants with all of this, which makes it a little more fun. I'm sorry if these sound like really stupid questions, but I have to ask them.