you can get aftermarket setups, but they run $1000-1500 from many suppliers. I have added a/c to two 64's using the OE setup from a donor truck(mostly cause I dig the center vent & pull knob controls)-not too hard, these systems were designed to be installed at the dealer level as well as factory installed. I used a condensor setup from Old Air Products, it fit like it as made for it & is designed for R134A. brian
