Jake,
These springs are for a 1990-1996 ford F150 or Bronco 4x4. Your 1997 F150 is different and these will not fit. If your truck is a 4x4 it has torsion bars if its 2wd it has coil springs but you will need upper control arms to install a 3" coil spring. You cannot just install larger springs without the other suspension parts.