Stock that truck had 6 bolt wheels. He upgraded to disc brakes in the front and rear and kept the six bolt wheels. Most people who upgrade like that will install 5 bolt hubs so they have a better choice of available wheels. There are more 5 bolt wheels available than six bolt.
What exactly are your skills?
Can you time your motor for example? Or tune your carb.
If not then an almost stock motored truck is what you need.
No sense buying a truck you can't use.
There's a lot more better suited trucks out there near you for half his price.
Like this one.
https://billings.craigslist.org/cto/6070332543.html