That is 99% plastic, one fender, and an external transmission cooler. What a shame to let them have it, that is completely fixable.
You can argue with the insurance about the value which will also change their calculus - the KBB value is NOT accurate (it's way low) b/c of the engine, the diesel is worth more. The engine is likely worth more than what they are valuing the entire body at!
If you aren't into fixing it yourself, or you absolutely cannot get the insurance to leave the title alone (branded titles are a major detriment to the value of a vehicle) then there MAY be members who are interested in buying significant pieces from it. DO NOT LET THEM JUST TAKE IT FROM YOU! Parting one out might take a bit of time, but you have an advantage in being centrally located in the country. There is a member in SC who experienced a dropped valve a few days ago, and needs a cylinder head. He might even want the whole thing. I will send him a link to this, but you might also want to post on the Facebook CRD groups:
https://www.facebook.com/groups/libertydiesels/https://www.facebook.com/groups/1597881963568464