I can't remember which way it went, but I saw one of the front end styles with the other bumper on it. I believe it was the new style with the old bumper. Looked kinda gay, because it rubs in the corners, and then has a big gap in an area.

But so, something like this is possible? There aren't any slight differences that the bolts don't line up on the fenders? Anything that won't fit as it should?