OEM Bed Storage/tool Pockets help wanted

[1310monster]

OK I have found a long fleetside bed that I can use in my project but it has an opening for the optional tool box storage pocket on the lower left side of the bed. The lid is missing and the actual pocket is gone. Does anyone have any experience with these? I'd like to keep it but no idea where to get the parts. Could these be had on either side?

[VileZambonie]

Here's one but no lid http://providence.craigslist.org/pts/5258985886.html

Making a door would not be very difficult.