Newbie here starting my 1st A body and need a/c help

See my photos post in July 2013 on updating my 74 Dart Sport with the engine compartment kit from Classic Air if you don't care about the originality of the V2 compressor. Be sure to replace the evaporator as old ones will look ok, pressure test ok, yet still leak down eventually after several days. My car was originally A/C but the components had been removed by the previous owner and came with the car.