If you're going to rip out the torque boxes you should consider getting the conv't style and the vert inner rockers. Its not much more effort for as deep as you are going. Hard to believe the cowls are good with a floor that bad but i guess it could be from the windshield leaking.
So are they comfy? Cause Wow! I really like that look.
They are comfortable! The down side is I found is the width of the tracks. The hack job to install them led to the majority of the floors demise. I will do a more finished looking install when they go back in...granted if I can find some pieces to replace the a few bad spots on their trim.
The holes you see there are due to moisture collecting between the overlap seams on the inner fender aprons. On my 1970, the metal from above looked to be rust free, however when I removed the front inner fender aprons to replace them, I found light rust underneath on the bottom layer. Looks like Ford did nothing to protect the metal. They simply spot welded the panels together and then painted over. So if the car is left out in the rain, the moisture seeps under and feeds the rust below. Your car likely sat out in the elements for a long time. Worse, when the car is not cared for and cleaned regularly, add dirt and other debris and the moisture is trapped longer resulting in more damage.