Thanks guys! That makes sense.
The drains and plumbing as Paul described apparently disappeared from Sparky long ago. From the location description, I wonder now if that is the reason the bottom front corners, both sides, of the cab were so badly corroded? Metal was mostly all gone for part of the corners. I have wondered why those areas decayed as they did. It looked like the cab had rested in water at those points, but there was no corresponding decay on the frame or elsewhere nearby. I have seen other models of these trucks with similar damage. I will now have to figure out how to reinstall these drains.
