Many times the front is just a hub swap, or even an "adapter" removal
The DWR axle is several INCHES wider than an SWR axle.... with the flatbed, you could just swap rims, but they would be out farther than the fronts.... (Think the new mail trucks)....
Is there a major reason do want to swap to SWR, if you have a flatbed, it's not going to be any narrower, and if you tow, the DWR makes it nice.......
The DWR axle is several INCHES wider than an SWR axle.... with the flatbed, you could just swap rims, but they would be out farther than the fronts.... (Think the new mail trucks)....
Is there a major reason do want to swap to SWR, if you have a flatbed, it's not going to be any narrower, and if you tow, the DWR makes it nice.......