stepside bed

[chrismoore701]

I have a 79 stepside and I just started redoing the bed, I bought a bed a while back that is better shape, a little difference, my bed has steel inserts for the gas filler hose to connect to on the fender the new one has plastic, is that a difference in years? And where can I buy a new insert. Another question, how hard is it to completely disassemble the bed? I have the fenders, tailgate and front panel off, but do the sides separate from the rear? It seams like it may be tacked together, can’t find any bolts, or does it just slide apart. Thanks for your help