Sounds like a good deal. My dad had a '78 F-250 that he got in '81, and put well over 400,000 miles (of sometimes not so gentle farm use) on it before he sold it. And as far as I kow, it's still going. The 400-C6 combo was hard to beat for reliability.
And my first truck was an early '77 F-250 Hi-Boy. 7.50X17 bias ply tires from the factory on the most evil split-rims ever designed, no power steering, and a 351M- NP435 4-speed. Soon to be the recipient of a 460.
