Definetly a nice rig. My dad had a 79' F-100 when I was a kid. It was dark brown, and had a 300ci 6 4 speed. Cruising down the road one day (it was little mack to be precise) it just threw a rod through the oil pan. No high RPM, no oil shortage, nothing. Just random. He ended up rebuilding the motor and selling the truck!
That body style grows more and more on me everyday! Nice find!