Asked the guy about the under body pics and this was his response:

The photos under are to show there are no oil leaks on diff, I could have painted but this is genuine from1992. no problem to paint, no rust on body parts. Been to Frazer & Double Island (approx. once a year) and to Cape York. Springs bought in 1992 TJM. Under body & Total vehicle was rustproofed. Never had any rust in vehicle, rear quarter window frames have some rust, but are sealed and ok.

What you see is surface lacking paint, years of sand & dirt striping off the paint. It shows no oil leaks. Springs have been on since 1992 TJM. Been. On Fraser & Double Island, been to Cape York All original it has been rust proofed on the underbody. Can take more under body pics & send direct to your email. Garantee never had any rust.