[kipps]

Find out what a local scrap yard would pay you for the truck. Offer it up on Marketplace or similar for $100 over scrap value. If there's no takers within a month, haul it in.

Edit: you'll need to know the weight in order to estimate the scrap price. Use two 300-lb bathroom scales with a wooden plank between them. Using this combination, weigh each wheel individually and add them up.

Edit again: If you don't mind the hassle, you could also offer that folks can cut their own patch panels off the truck for a $20 inconvenience fee.

If this truck and any others you own have cargo lights, inspect behind the light. When the gasket ages, water gets behind the light and rots them out. If the parts truck is in better shape, it might be worth cutting the entire cargo light assembly out of the cab and installing it in a rotted cab.