New cab corners help!

[fordmanmark1]

I just bought sone new cab replacement corners for my truck, i havent put thenm on yet. They look like they go a 1/4 the way up the body and wrap arround the back of the cab. Do I have to take the bed off to do the job? or is there another way to do them, the back side behind the cab looks ok! Any advice on how to do the job in general would be apreciated. Mark!

[Matt P]

When I replaced mine it was fine around the back as well, so I cut out the rusted area, just a rectangular area and cut the same piece out of the replacement corner and welded it in, if the back is fine I would just do that but if you want to put the full replacement piece in your gonna have to pull the bed