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7,000 Posts
I got this on the challenger forum. Check out all the tuning for the 6.1/6.4 2011/2012. You may want to give them a call.
http://www.bgperformancepcm.com/
http://www.bgperformancepcm.com/#srt8
http://www.bgperformancepcm.com/
http://www.bgperformancepcm.com/#srt8