on a truck that didnt come w/ it from the factory
it has a heater so im thinkin it wont be that hard any idea of the parts i'll need im getting the compressor and belt new but i figured i could get the rest from a junkyard its an 86 bronco II 2.9 v6 wich is pretty popular in the 80's rangers + b2's
If you have a good junkyard nearby and can handle a welder it is pretty easy.