I had 2 F100s, one was a POS '71, the other was an '80 2wd shortbox with the 300ci straight 6. I snapped a front coil spring in the 80 on a chuck hole. I had oversize springs put on, a bigger I beam, and it sat higher than a 4x4 like a pre-runner before that was in vogue. I ran studded snow tires in the winter and never got stuck. The '80 rusted out bad in 6 years so I sold it. My '98 Chevy 4x4 has the 262ci 4.3l liter v6. Come to think of it, all my vehicles have been 6 cylinders since 1995.