I bought a DX on 2003, and had the dealer install the AC kit. The price of that installation was part of the bargaining. The installation instructions used to be available on the web (from one of the online accessories dealers), and yes it is pretty involved, installing the condenser in front of the radiator, etc. It even includes the 2nd fan. It probably requires a half a days worth of labor. In 2003 they might have done a half dozen of these jobs, but since then very few.