The floors, the doors
As I wrote earlier after initially patching part of driver's floor it lasted around one day until I've cut it out and redone them whole.
Here's the initial state:
Pressing the corrugated floors:
Whole bottom of the pillar was rotten as the rain water was sinking in trough radio antenna hole. Repair has been made in two parts in order not to change geometry of the body if by any chance that pillar is somewhat tensioned (you never know it might spring out from it's place when you cut it whole at once).