A lot of OEM air conditioning compressors get there lubricant from the freon, sort of like a 2-cycle engine getting lubed from the gas/oil mix.
To survive, the compressor receives a few drops of oil (experience will tell you more or less), then there is an oil separator on the output side to recollect it.
Beware, ac compressors will get generally hot as well as the air coming out (pv=nrt engineering term- I think), so the output hose will need to handle this heat.
As for what you'll need from the donor: compressor, brackets, pulley, belt, wiring if it's separate, dash button, fan relay, fan, evaporator, pressure lines to/from compressor is what I come up with. Compressor, brackets, pulley common sense. Belt for replacement (its length). Wiring as it's easier to place into use. Dash button to keep original looking. Fan relay to connect the compressor power to along with pressure switch to be added also. Fan to resell to someone in need of an electrical fan (or you could use for yourself as a possibility). Same for evaporator or this could be used as a great auto tranny cooler. The pressure lines as this will help 'adapt' the compressor as an air compressor. You'll probably need a small tank and a pressure gage.