Here are a couple of photos of my 3rd srs B20 fuel tank. You can see there is a hole in the well under the reserve fuel filter where debris collects. My 1st srs B20 tank has needed a repair in the same area.
The tank is very repairable and elsewhere looks in serviceable condition. There is some internal corrosion so it will need some sort of clean out whether by tumbling gravel internally or removing the ends and using a wire brush,.
Any reasonable offer considered. The tank is in Sunningdale near Ascot, Berks.
Chris