under dash a/c

I had a ThermoKing under the dash on the first 66 Dart I restored. It had a POS York compressor and tubing under the hood was held in place by ty-wraps. Since what I had and what you are dealing with is not a factory install, the routing and location of some components was left up to the installer.

Others have given you the parts list of what's needed. IMO, you also need to make sure that the crankshaft pulley and the A/C pulley line up. You may need an idler of some sort to keep the drive belt off of the fan pulley.

The bracket for my compressor developed a crack. TK is still in business, but it no longer makes aftermarket automotive A/C. Finally got hold of an old-timer who said they got rid of their inventory years ago and had no idea where it went. I ended up putting a Mopar RV-2 compressor in the car because I could get all of the accessories to make it fit properly. My A/C guy fabricated the needed hoses to connect everything.