Sealed up the rear section of the passenger side floor.
POR15, and then a coat of enamel over that should last another 30 years..
The back seat section has been done as well.
There is a bit of rust where the drivers side "B" pillar meets the floor pan.
It's a complex section of the car, (as the floor meets the rear seat meets the rear fender meets the door sill meets the rocker panel.
I cut out the rot, and may need to cut more, to gain access to make sure all of the rust is gone.
Over the years, water and dirt had built up i(n the section where bottom side of where the drivers side rear fender attaches to the rocker section) had worked it's way into and below the seam sealer applied at the factory.
So, when I peeled up the seam sealer, rust was hiding....