Will this combo work?

[bsccp]

I need an inexpensive work truck/driver and have a couple of friends that put this into my head:
One guy has a pretty decent 74 K10 longbed but no drivetrain. Sheetmetal is decent and pretty rust free
Another buddy has a 1999 TBI 350, automatic and transfer case with harness and computer. $1000. 86,000 miles out of his daughters rolled over Tahoe.
How much hassle to get the 99 drivetrain to work in the 74?
Will the 99 transfer case adapt to the 78 front axle?

I'm a 2 wheel guy so this is new territory for me. I have the resources to make it work up to a point but trying to keep my costs down for what I want to have.
I need a worker since my '51 GMC 5 window will be the fun truck (6.0/4L80e/S-10 frame)

Thanks for any links or thoughts