68 Steel bed floor patches

[bretcopsey]

Now that the weather is warming the next project for the 68 is to blast and paint/bed line the bed floor. It is heavily rusted and pitted, but pretty solid. I think it should clean up and look good once raptor lined. The only problem I am seeing right off is there were a couple small patches brazed in at each rear corner and at least one of them needs redone. However, the metal under the floor sheet metal also looks sketchy. Any suggestions on how to tackle this?