Thanks. That's a shame...
He brought it around to my place today after giving it a tune up and I got under it and had a good look. No rust at all anywhere and it just looks all so original. Diff needs tightening up, it has a small leak but nothing drastic. Gearbox is dry as a bone as is the underside of the engine.
Inside is like a time warp... everything is as it should be and just showing age and wear.
Cool old stocker.