[dsraven]

I put a steel box floor in mine. we get lots of temp differences here and I want to not have to reseal or anything once done. I have wondered about a plastic decking like trex though, it is a sold piece and takes maching well if the edges need to be trimmed or routered etc. not sure how it would hold up under the heat of the muffler etc. may need a heat shield, like any bed should also have. my tank filler is in the tep side fender because I do plan to haul stuff and would inevitably need to fill the tank when there is something in the box. filler has a door over it from a newer truck that is reshaped to the fender contour.