Hey All, I recently purchased a 2013 F350 that already has a 5th wheel or goose-neck or ??? rail mount under the bed - thing is, it is not rectangular like all other under bed rails I have seen (Reese etc) // The two mounting points toward the cab are farther apart than the 2 near the tailgate - I have never seen this before and was wondering if anyone know what would hook into this mounting system - any info would be appreciated

 

No idea what that is, but it's definitely not the Ford 5th wheel /gooseneck prep.