6.4 0-60? Not bad, but still meh. I think one of the fastest production pick-ups would be the current generation Ram R/T. The newer ones are slightly slower due to a tire change in 2011 (went from 20s to 22s), but still pretty quick. MotorTrend tested a 2009 model, and hit 60 in 5.7 seconds. They only managed a 14.4…