67 step side compared to a 64

[Ft.ValloniaStreaker]

I'm at work and pressed for time, but there's a 64 step side bed that has spent most of its life as a farm wagon, yes stored inside.....so I know the fenders are different but what about the bed sides? Would I be able to use it on my 67? If I had time I'd Google it to death, but you guys are usually pretty quick with this kind of info....So Thanks in advance