I am putting one in my 69. It is fairly easy and straightforward, but the instructions are a bit hard to follow. Common sense helps when installing the parts. The hardest thing was installing the duct to the aftermarket center vents provided in the kit. I have the underdash unit installed and the compressor, but I haven't hooked up the refrigerant lines yet and probably won't get to that until later in the year. There is an unexplained knob under the box that I won't know what it does until after I have it running and experiment.