What I found on the Shelby forum.
"This is just off the top of my head, I know I'm forgetting more
*Aluminum block
*Electric steering
*Silver finish on SC
*Blue power coat valve covers
*Improved exhaust manifolds
*Larger exhaust diameter
*H pipe vs 2010 X pipe
*Painted rear end
*Finned aluminum diff cover
*Improved brake cooling
*Auto start ignition
*40% larger inter cooler
*HID's standard
*No gas guzzler tax
*Flip up/ down rear headrests
* Improved under body aero dynamics
*Orange antifreeze
*Bigger faster more complex computer
*Wideband o2's?
*New colors
*Improved suspension, fixed the 2010's wheel hop.
*10 horsepower more but seems to make more like 20whp
*Factory "Boost a pump" for the fuel pump
*"My key" for limiting speed and TC for certain keys
*Different cam part numbers, some say its the Ford GT cams due to the 2011's making peak whp at redline
*Optional glass roof
Edited by BigDan, 22 January 2011 - 03:48 PM"