I have a 67 too, and the front end of mine is completely apart at the moment. I can take pictures of the various pieces and help you narrow down what is missing.
The main parts under the hood are: compressor with clutch and pulley, manifold/muffler assembly (bolts to the back/side of the compressor) condenser (in front of the radiator) receiver/drier (next to the condenser) evaporator (fits in the suitcase) TxV valve (connected to the evap) POA valve (connected to the evap) crank pulley for A/C various hoses, brackets, and spacers
There are 2 schrader valves. One is part of the muffler assy (high pressure port) and one is on the POA valve (low pressure port). These are used to measure the pressure when the system is operating and to add refrigerant.
I can provide links to some of the parts that are available. Some are available through parts houses, some are on eBay. Some parts are very hard find.