I don't know about the new GM shifter, but the Hurst that chevy put was 22% shorter throw then the stock shifter. The after market Billet Hurst shifter is 44% shorter throw then the stock shifter. I have the billet Hurst shifter and love it.
2010 2SS/RS Victory Red, MN6, 1-7/8 Kooks LT Headers, SLP Axle Back, Edelbrock E-Force S/C, ZL1 Fuel Pump, 72# Injectors, JRE fuel rail upgrade, Roto-Fab CAI, Elite Catch Can, Billet Hurst Shifter, DSS 1000HP axles, Spohn Trailing Arms, Toe Links, Lower Control Arms. Chrome Torq-Thrust wheels. 546/rwhp & 522/rwtq Tune by Jeremy Formato.