Does a cross sectional view of the floor pan, directly under the driver's seat of a 73 Mach, exist. The two bolts attaching the seat brackets to the floor thread into a vertical portion of the pan but underneath this vertical portion of the pan is not visible. I am trying to better understand how this portion of the floor is constructed (two layers of sheet metal must be boxed for rigidity) as I plan a repair which is needed. I would just like to view how it is constructed not so much discuss what is to be repaired and how others would fix it. Thanks so much!