You beat me to posting about that new shirt from WPG, Renault. It's everything Sam wants except for the blended material. The only other thing that concerned me were the epaulettes. It may just be whoever modeled it for the photo wearing too large a size, but they looked a bit short to me. Aside from that, it's a sharp looking shirt for the money. I might give one a try on my next order.
Another source for GI suntans is At The Front. I got two sets when they first got them in and have worn the heck out of them. The shirt actually fits better than the WPG versions I've bought in the past. They're out of most sizes at the moment, but restock is on the way according to the web site.