Need a pic so I can see what I can buy new and what I need to find used. PO deleted it. I know condenser, evaporator, drier, compressor and compressor lines can be bought new. There has got to be more components. Hard lines etc. Anyone? Even a diagram that pertains to 1991 RS 5.0 TBI.

 

Depending on how much the PO ripped out of your car, your objective will range from very difficult to wildly impossible for the average hobbyist. Your best bet is to find a wreck, and strip everything you need from that. I'm sure some 3G Camro AC system parts can be puchased as new/repro. A lot of it is not.

Lots of wiring, relays, brackets, vacuum mechanisms, valves, ducts, doors, etc.

Especially, if the PO ripped out the cabin components of the AC system, the job of finding a serviceable donor system, and installing it to actually function in your car, is likely beyond the abilities of many competent professional mechanics who have access to a wide arrays of tools and helpers.

Sending you a PM with some pics. You'll understand why I said what I said.

 

Here is an under-hood diagram that omits all the wiring, relays, brackets, vacuum mechanisms, valves, ducts, doors, etc.

 

W.E.G. - do you have the same type of illustration that shows the wiring? Thx byron

 

From the looks of it, the PO removed hard parts from the firewall forward. Blower motor is still there and functioning with fiberglass delete panel.