I have a 68 GTO automatic with air that I am slowly picking apart what are some opinions to sell off all the a/c stuff. I have everything in great condition including the metal dash panel,dash pad , All the ducting, air box, controls,vacuum,wiring evap case,compressor ,brackets, etc. Do I try to sell it all off in pieces or sell the entire package to someone looking to convert over to factory air. I could even cut out the firewall section at the evap case. What would it all be worth?