The 2016 Shelby GT350 and GT350R Mustang order guide has just been updated and is available to download.
The latest revision has finally added GT350 specifications including nominal compression ratio, horsepower, torque and fuel economy. There is also a note that specifies the Shelby GT350R (920A) must be ordered with the electronics package in Maryland and Rhode Island, due to legal requirements — namely requirements for hands-free capabilities.
Check out the latest GT350 order guide in the forums.