Anyone know how difficult it will be to put in A/C where there wasn't any before? I am looking to do this. From what I have found is that I will need the evaporator housing, evaporator core, switch box in dash, and air duct for inside, or is that there already? Under the hood I need condensor, compressor, compresser/alternator bracket, drier, and the hoses. Is this correct? Are there any parts in particular that I should buy new? I thought someone told me one time that a if a certain part is exposed it will become no good, well maybe that's all of them. Thank for your help guys.