Value of a solid 53 gmc 1 ton tilt bed

[Strykerta]

So ive came across a friend of mine who has a 53 gmc 1 ton stashed in a barn locally. Havent seen the truck yet but he claims its only got surface rust and no damage. All original with a hydraulic flat bed. Hasnt been ran in 10 years but had no issues when parked. What would the range of value be in this if i grabbed it to either bring back to life or rob the cab and front and covert it to a 1/2 ton regular truck?