Picking up a Suburban for a donor for my K5

[93FatBottom]

I scored a deal on an 86 K20 Suburban. Running driving 350/TH400/NP208/10b/14b. Its beat to hell body/interior wise, leafs are saggy, real rusty, etc. But she runs great, no funny noises, good oil pressure, half hour test drive 190 degree temps, 4x4 worked great hi and lo. I'm going to pick it up on a Friday and drive her home, then swap my 10b/12b on the K5 to the Suburban and the 10b/14b to the K5, pull the motor, trans, tcase sunday morning, and my scrap guy already penciled me in to pick it up Sunday evening. I'm excited to finally get the damn thing on the road! As soon as the swaps done, the following month gonna order the lift and Thanksgiving weekend shes gonna make her debut out in Johnson Valley, CA! (If all goes according to plan, which in my world, it never seems to )

Questions: I'm getting conflicting info on if the 3/4 ton axles will fit underneath the truck with no lift. The front is a 10 bolt 6 lug, so swapping to 8 lug 10 bolt shouldn't make much of a difference, right? I hear that the 14 bolt semi floater rear wont fit with the gas tank installed, but I wont have the gas tank installed until after the lift kit (currently running her with a gas can and fuel lines up front). But to be sure, can anyone confirm?

Also, will the K5 stock steering and brake lines hook up to the 3/4 ton axles, and if not, what needs to be changed to make the swap quick and easy? I've been looking for a TH400/NP208 driveshaft but no luck, so I'm thinking i'll end up at Wenco for a custom shaft, so I'm not concerned with that at the moment.

Do I need new spring plates to attach the 3/4 axles to my stock K5 leaf springs? And vice versa for the 1/2 ton axles under the Suburban? I've been told that I can just swap everything between the trucks, but I was then told that the Suburban rear leaf springs wont fit the K5 (52" vs 56"?) and that it might give me trouble.

My other question is about the transfer case shifter. I currently have an NP203. Do I need to cut the hole in the trans hump to fit the NP208 shifter? Or will it fit? This question isn't too important, the motor/trans/tcase swap wont come until later September/early October.

I'm just trying to get all my ducks in a row, because I only have that weekend to do the axle swap work, and I need the Sub gone that Sunday night.

Any other advice would be much appreciated!

Thanks guys!