That truck looks like it's in pretty decent shape. I bet it won't be any trouble at all to get running and driving. Parts are readily available.
I got a truck that hadn't been started or driven in 5 years and only rarely used for the previous 15.
Tune up, rebuilt carb, rebuilt fuel pump and new fuel tank and lines got it running. This only took a few weeks or so. Parts are easily obtained and relatively cheap.
Rebuilt the brakes a year or two later when the mc started leaking and have put 10,000+ miles on it.
Do you know if it still has its inline six and 3 spd transmission? It has "hotrod" wheels so maybe the mechanicals aren't stock?