I'll have to dig around on my home computer but I probably have a couple of pictures of the back of this car with the carbon fiber wing on it when Jess brought it to PAS in July of 2011. I told him he had to put the same wing on 11-025 or we wouldn't buy it. I just talked to him at Charlotte last weekend but I don't have his contact info... Maybe try calling RTR? He was working their display.
EDIT: Found 2 on my phone...