I too wondered why there isn't a cts between the 300 hp 3.6 V6 and the 550 hp LSA. I don't know if you guys have heard but word is from Leftlane is that they might make a CTS with a Turbo Diesel. 310 hp but wait for it... 520 ft lbs of torque!
Here's the rest of it. http://www.leftlanenews.com/report-c...el-in-cts.html