Check out Timbrens website, you can find the part number for your rig. Its a good site. Lots questions about the 97 Ford, 2wd, 4wd, torsion bar suspension etc.
your best bet would be to call them cause they have a lot of info on the f250. the listing for the part i have # is '05-'11 f350 that is all i can tell u. thanks for checkin