Help Valuing Used Parts?

[KN4ICR]

Need Help with the value of a few items off my latest 72 truck.

1. LWB bed without tailgate. Drivers side bed side is good. Passenger side have damage on rear. Floor has a few pinholes in the front driver side and a a weird "tear" near the tailgate but super flat and not dented up at all. Wheel tubs are good and not smashed up. Basically a good bed for a driver after a bedside and a little TLC.
2. Under dash AC. Zero clue if it works or not. Only have in cab parts.
3. Heater box and heater controls. All stock parts in good shape. No idea if there is a market at all for these. Switching over to Vintage Air so...
4. Stock gas tank. No rust with working sending unit
Thanks in advance