i got an 02 f250,just the 5.4 gas,but the ride has become extremely bumpy.
what would be the cheapest way to smoothin out my ride?

 

You can upgrade to after market shocks or if you want to spend a little extra money you can lift the truck using springs that are soft ride, EZ ride or other brand sky jacker and most other companies make there own version

 

Maybe a airbag system will help you out to, they improve the ride on my suv plus stop me from bottom out, and helped with the stability of my truck thses guys help me out with all the questions i had.1999-2004 Ford F250, F350 2wd 4wd - Firestone Ride-Rite Air Bag Helper Springs (NO-DRILL) [REAR] - 2484 | $315.18
hope this helps you. have a good one!!!!!