Ive removed the valance and closers from the car to take a look at the patch that's been applied to the boot floor.
It shows that there are a couple of patches on patches,holes in front of the subframe mount plates, which are also crusty and showing signs of rust bulge between plates and boot floor.
other side
The wheel well also has a hole and is pretty thin in places.
The rest of the floor looks pretty good.
Not sure which way to go, full floor replacement (already replacing floors, inner and outer sills) or just add a boot floor 1/4 panel plus fab up some mount stiffener plates.