I can say the 2013 Boss does have a digital speedo in the center cluster; the digital one. I tried this with my Boss and sure enough it does work. A fellow member pm'd me about this thread and sure enough it works, if your willing to press the "OK" button about 19 times. Go to post #5 to see how it works. Here's the link......
http://www.svtperformance.com/forums/2013-shelby-gt500-413/964010-digital-speed-read-out.html
http://www.svtperformance.com/forums/2013-shelby-gt500-413/964010-digital-speed-read-out.html
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