Sorry for your loss
I have a yard full of that era trucks,i would rebuild it,if it was mine.Easy trucks to work on.Yours looks nice and clean,no rust,make it easyer to take apart.The cabs from 67-72 will all work,mabey get the frame straightened,a few other parts.Paint and your back where you started.
One of my trucks is a 72 grand sierra 3/4 ton with all options and the 8'6" extra long bed,i bought it off the original owner who had it in New Mexico all its life.
If you don't fix it,advertise it someone else may use it as a doner or restore it,just don't scrap it.
Tough day:msp_sad:
Thomas