If you're asking for opinions, then here's mine:
I do not care for the black wing.
Maybe if you painted the hood, roof, and hatch black, but not just the wing (Actually, having the hood/roof/hatch black may look good).
An SRT wing would be OK, but I'm not sure how much they are; and come to think of it, I've never seen one on a non-SRT.

Good luck.