I just found and drove a silver supercab FX4. I want it, but will my step bars off a '03 F250 supercab. Dealer will let me keep them if they will fit. Anyone have a good guess?

 

Measure the mounting brackets on both trucks and make sure you check the width of the running board so that it does not rub against the edge of the frame. If the boards run all the way back to the wheel well watch that area very closely. Good luck!