Found one today.
Long story. My wife found a Show n Shine on Facebook in Toowoomba. I dropped her off shopping while I looked at the cars. Some nice ones there. I got talking to Jeff who has a Sandman. He knows davegmh, micks sandman and Flamenco.
I mentioned that I was looking for an upper tailgate and he said there is one over there in the swap meet section. Over I went, had a look and did a deal. It's been sitting in a shed for about 15 years. Painted green but genuine colour underneath is yellow. Looks to be in a lot better condition than mine.
Thanks to rocky, Famenco, Vombil and Valencia for looking for me and offering alternatives.
Just goes to show if you don't talk to people you don't find out stuff - also the wife is always right. By the way she did heaps of shopping.