The fuel tank isnt rusted - just dirty.
Bad news!
This is the bottom section of the rear drivers die fender that had to be removed due to massive rust.
This is the rust behind that section of panel that was removed. going all the way into the wheel arch. and into the boot cavity. fixing this will be time consuming.
Bottom of the inside of the panel that the part i removed was spot welded too. Also rusted and requiring replacement.
The drivers rear wheel arch area rusted through into both the inside bracket for the rear fender and the boot area. also requiring work.
This job just gets bigger and bigger and bigger. its insane. never the less no point doing it half assed all the rust will be cut out and fresh metal welded in. hoping to get all the supports for this rear fender and the skin welded on by friday then on sat/sun/mon/tue i can do some of the many other rust repairs.