Back in the 1970s when I co-owned a body shop, my partner had a set of Cameo bed sides. Even back then, they were scarce and valuable. What's even more pricey are the tail light assemblies- - - -they resemble 54 passenger car lights, but they're not an exact clone. Look closely for spider web cracks or other structural defects- - - -as I remember, they were pretty flimsy and prone to cracks, like the Corvette bodies from the same era.
Jerry