Complete underhood setup to restore missing air conditioning

Fishing68 said
1968 Barracuda 340 p/s, p/b, automatic car has had all the factory air removed under the hood by a prior owner. I am looking to restore the car and looking for the complete setup to bring back to original spec. Thanks FABO!

I have the a/c heater box that goes underneath inside for the dash if needed. I also have a/c compressors and brackets