I fitted the cab and bed SS sheet at the same time. That drove what I cut so they didn't interfere with each other. The small lip on the cab will allow for a good sealant seal between the cab lip and the aluminum plate that's on the frame. Then, when you build the bed, it doesn't interfere with the cab at all and can be dismantled later (if needed) that won't impact the cab at all.

Let me know if you need anything else.

Mark