Looks pretty nice!
Everything works? (engine, high & low range of transmission, xfercase, brakes, dump, all electrical, all guages)
Any Leaks?
How are the tires? (hold arir, cracked, % worn)
Any rust-thru anywhere? (1st spots to show are usually the front fenders where they meet the steps, the leading edge of the hood where it curves around the grill, the cab floors, & the door bottoms)
What condition is the dump bed in? Does it have the tailgate?
Any dents?
Typically the G749 series trucks don't sell for much.
I've seen nice examples sell on eBay for anything from a few hundred to maybe $2K for a nicely preserevd example. A fully restored example can sell for more, but there aren't many buyers, so they tend to sit on the market for awhile.
HOWEVER there are a few enthusiasts out there (& on here) who love the G749 series trucks, and a dump in good condition is particularly hard to find these days.
SO I'd suggest that you post as many pics as possible, decide what you are willing to let it go for, and see what happens.
MAYBE I'll even consider shipping it down to GA!