67 C10 steel bedside install question

[vikingsandpintos]

My daughter is going to start test fitting all the new panels together, everything for a steel bed is new. Floor, bedsides, ect.

Just holding one up to the floor, not sure how the rear fits together. It almost looks like a part of the bedside slides under a tab on the floor, or does everything on the bedside go on top of the floor itself?

This new floor has a slot going side to side in that area.... At least the drivers side does. The passenger side the gap is closed up, but I could open it up with a thin grinding wheel. Of course, that is the side we were looking at, after we quit for the night she noticed the slot on the other side.

This bed is going to be the death of me, smh. We didn't mess with it much tonight, just set the bedside up to see how it fit, it didn't seem to want to go together, and said enough for the day, lol. Or if anyone has any pics of the inside corner at back of bed would be great, too! The old bed is gone, of course, so can't look at it. Thanks!