Square Body driveline fitment

[shaffecv]

Hello All,
Brand new to the forum looks like a great wealth of info.

I got struck by a bolt of lightning today.

Ran into a friend from high school and we were shooting the bull about cars we had back in the day.

My last 2 years of school and 2 years into my working career (1987-1990).
I had a 69 4x4 K-10 short bed. started out 307, 3 on the tree. Power brakes no power steering. 3.73 rears with 33x12.50's. It was a dream to park at the mall since someone before I got it put a small Malibu steering wheel on it.

Turns out after 5 owners it's sitting in the weeds at my buddy's farm. Basically a rolling chassis. Looked it over, basically a roller. No engine, trans or case.
Pedals and clutch linkage is there.
I have a 1983 K-10 4 speed truck at my disposal for parts.
I would like to bring this truck home .
Will the rears, especially the front bolt in?
I would like to put disc up front if I take on the project.
Sorry for the long post and thanks in advance.