There's rumors going around some other boards claiming GM is bringing back the GNX, and it looks like a few people have been having fun with photoshop trying to come up with what it will look like. Some supposed info is out there too claiming it will have a twin turbo 3.6L V6 and run high 12's. See the link at bottom for that info. I can't see GM, in the situation it's in, giving Buick a car like this, but it could be just what GM needs to get excitement in it's products again.
Link to a board with rumored engine specs

Link to a board with rumored engine specs
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