It almost same as mine... except that cone-shape air filter. I think all the 05 or newer GT have 4.6L 300hp engine.
Here is a quick list of what they have done on my car... racing springs... performance clutch, heavy duty sway bars on front and back, Bilstein shocks and struts... and very loud straigh-through 2.5" stainless steel exhause. hehehehee...
The previous owner spent too much money on it...
Also, take a look of these I just got last weekend...
http://web.wenxuecity.com/BBSView.php?SubID=photography&MsgID=380365