Thanks very much for your kind and prompt reply!
I bought it from a person who thought the reverse gear in the auto box had gone, but when I got it up on the lift, I discovered that all it was, was a gearbox mounting and engine mounting were near their sellby date...and when it was put into reverse, the engine and gearbox moved under the torque, causing the gearbox to vibrate. As soon as I swapped them out...no more noises or shakes!! It has 220 thousand kilometres on the clock, and the engine and drive-train are really nice and quiet now. I've always had Cherokees and Nissan Patrols before, and they burn a hole in the fuel tank/wallet at an alarming rate!! The Forester is remarkably economical on fuel by comparison...and I think I have a good buy on my hands!
I saw a complete set of the same panels on eBay USA, but shipping, import tax etc, and the fact that there were all of them, and I only need one, meant I didn't try for them. Perhaps I should have , and sold the others off over here!!