Value selling complete will depend on condition of trim parts - interior & exterior - and much of that stuff is hard to find.
If that's all toast as well, then it's drivetrain & mechanical + scrap value if complete.
Selling complete saves you time & labor, and if it rolls, may be easier for a buyer to load up & go.
SWAG is $3500-$4500 asking, depending on condition; $2500 should work if you just want it gone.
As others have stated, 4-speed & Dana add a bunch if that's what you have.
A little effort at cleaning stuff up makes it more appealing.