It's a nice truck. I'm partial to that body style Chevy. The 305 is a pretty reliable engine. I'd prefer the 350, but that can always be added later. What tranny does it have? Those came with either the 400 (no overdrive) or the 700 (overdrive).
If it was for me, I'd pass because it's a long bed. I like the short bed version better. But to each his own. It's still a good deal, as the ones I've seen in my area in worse shape than that are fetching over $6,000.
Just a traveling cat in a tall black hat riding a goat. Nothing to see here.