I bought a Jap Import Disco 1 in Dec 2004.
Rust is not a problem.
However after a few years I checked out the boot floor and found the foam backing absolutely soaking wet. Took 3 days to dry out.
Fortunately the floor was ok but the access plate to the tank was rusty and wet. Cleaned up the access plate and when I put it back I covered it with an old complete newspaper to soak up the condensation which I am convinced causes the wet in the floor. Checked the newspaper every 6-8 weeks for the last 5 years and boot floor and foam backing 100% dry.
Bit of a long story, guys, but think about it and try it out.
Jim A
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2002 Disco 2 auto
1996 300 Tdi auto now gone after 9 years.