The lines aren't to bad price wise. A member offered to help, it could benefit the both of you to investigate the offer.
If it had AC , what is still there on the vehicle? Acculmutor, condenser in radiator, compressor, lines, o rings, controls, 134a fittings, wiring harness, Up idle solenoid on carb, and a bunch of other things not coming to mind. I found a donor and transferred it over.
This is a pic of the compressor on my c10. You can read the part number off the compressor threw the big picture in my journal .
That year has a busy engine compartment. In the stock location it doesnot look too bad.