Rear diffuser?

[The Stickman]

I am contemplating putting a rear diffuser on my car. The why is harder than the how. Why because I like the aggresive Boy racer type look. But I am smart enough to know my car has a very clean look that I shouldn't mess with. I am not sure I am smart enough leave it alone. Now the how is easy because I have a(2 actually)carbon fiber front nose wing off a 2000 Dallara IndyCar. Now the idea is to use this as a REAR diffuser even though it is a front wing. I have 2 ideas. One fixed and one moveable. The fixed one would simply be grafted into the rear bumper as to look better and smooth some of the air coming from under the car. The second idea plays off the first. Except at speed the Diffuser could be lowered so that it actually becomes a wing(which it is) just that it is under the rear of the car. Here are some pics of the wing, and please share your opinions.
https://static1.pt-content.com/images/pt/2009/06/100_42011-1.jpg

https://static1.pt-content.com/images/pt/2009/06/100_42061-1.jpg

https://static1.pt-content.com/images/pt/2009/06/100_42001-1.jpg