I did the diesel swap in my truck without a donor truck, just the engine. Off the top of my head you will need:
-4 core radiator
-Remove and drain the tanks of all gasoline, or install diesel tanks(recommended).
-Install a fuel return line (unless truck already has one). rubber or steel
-A fuel filter housing, any year. mounts on firewall
-Oil cooler
-Extra battery tray. build or buy
The 350 trans is really not an option. Any standard will bolt up, although the TH400 auto is the best tranny for this engine (gear ratios are perfect).
You will need to wire in a manual glow plug switch or use the OE automatic configuration (recommended, but more complicated wiring).
-Your 350 engine mounts should work fine. I bolted mine right up without any troubles.
-Run a ignition wire to the fuel valve located on the injection pump.
-An electic fuel pump is also a nice touch. I mounted mine on the firewall and wired it into the ignition circuit.
-Using a donor truck is by the far the best way to go, if possible
-There are some small headaches you may run into, like finding the proper coolant hoses or fitting the diesel radiator in. It's all doable, but a time consuming job if you want to do it right.
It was worth it for me. I love my diesel.
- Mr Diesel
'76 C30 Crew 6.2