I have been casually trying to buy another trunk and spoiler to do the same thing.The stock spoiler looks close enough that it should match the concept car. I don't want to use my original one just in case it would not turn out right. I was thinking fiberglass could be used to blend it together. I wanted to be the first one to do this, but I have plenty of other things that need taken care of first. Good luck, I hope it turns out good.
