Greetings! I just bought an 05 f350 long bed dually. It looks like there are 4 holes with sleeves that line up with holes in the frame and they appear to be where fifth wheel rails would attach. These appear to be from factory and are integral to the bed frame.
My question is, what rail kit fits this truck? Do rails bolt directly to frame through these holes without brackets? Has anybody got some experience and part numbers?
I installed a rail kit on my f250 and it was one I can get online. Not sure if it would fit or not.
Thanks!😎

 

No difference between the 250 and 350 as far as the rail kit goes.... should swap right over.