Make sure the 4WD works. I have drove a few for sale that the 4WD did not work.
They admit the mileage is unsure. But the horn pad is very worn. My 86 has 150,000 plus on it and the pad is nowhere near that worn, but everybody holds the wheel differently.
As Gary said, check the emissions, mine was a mess.
It would take a lot of money to make a lessor truck look that good.