From my limitted knowledge of ACs - Don't just start wrenching!!
Some of the lines are under pressure and can hurt you. Also the refridgerant is superbad stuff. Just run by an AC shop and have them drain the system. After it is properly drained and the refridgerant is properly disposed of or reused, then you can just yank it all.
Don't start cutting, take it out properly and I am sure you could get some coin for it.
1990 Grand Wagoneer "Daddy Wagon"
Edelbrock Performer Intake, Headers, Cam, 1406 Carb, Mallory HEI. No smog. Rusty's 4" all springs. '89 GW wheels, custom painted and wrapped in Maxxis Big Horn 31x10.50, dual 2.25" exhaust outside the frame rails.