Another 700R4 Swap Question

[TN4X4]

I drive about 50 miles (interstate) one way to work. My truck has a 4.11 rearend and 33" tires. Obiviously, this combo and a TH350 doesn't do well. I've researched these forums for quite some time and I haven't found anyone that has converted a K20 from a TH350 to a 700R4. I'm sure I've overlooked it. I'm pretty familiar with the 700, but not with these trucks, especially the 4wd's. For instance, I'm not sure what kind of transfer case I've got and how/if the 700 would bolt to it (shaft size and spline count differences). Any advice and direction would be a huge help.