My father has a 1997 F-150 Super Cab long bed and that thing is as long as that truck.
Only thing longer is the Crew Cab long bed my friend has.
I bought my wife a 2000 F-150 super cab short bed decade ago and it has the off road package. Sway Bars; 3/4 ton rear end pumpkin with half ton axle shafts; limited slip. On ice you cant make sharp turns with it. It will turn switchbacks that the 1997 will not. :)
I bet that 1997 F250HD is similar.
Truck: 1981 F-150 Explorer / Engine: 300-6 California MCU Feedback System / Trans: T-18 - 4 speed / 2.75 Ford Rear Axle Open Diff.