We pulled the old 100 gallon / tool box out of the bed a few weeks ago and i see some rust, which i was expecting. The PO had torched somewhat of a circle in the bed to get to the main drain/plug under the fuel tank . The rust isn't really that bad but i was more concerned with the four corners of the bed itself. Infront and behind each wheel well, in the bed, it looks like there are inserts in the bed. They match the ridges in the center of the main part of the bed and they are held in with large phillips head bolts.
Is this the way they came?
Is this the way they came?
, where I scratch build an entire bed but here's the 