1973 C20 4x4 conversion

[Tecler]

Hey guys, i'm new to this forum and im sure there is similar threads to this one out there, but i need some good info pretty fast so thought i would try a new thread.

So about 8 months ago i purchased a 73 C20 2wd auto with a 454. IT was cheap and had a straight body. The other day i came across a 1978 C20 4x4 up for sale as a parts truck for $200 so i bought that as-well (don't worry this is leading somewhere).

I was wondering if due to the same size,body etc how easy a 4x4 conversion would be. I understand it can be done however, the new donor truck has a 4 speed in it that looks pretty beat up, so i was wondering if the transfer case would bolt onto my existing transmission. I believe the transfer case is np205 or something like that.

Also any other hints, heads up, or how to's would be great for this project.

Thanks.