2008, 6.7 2500, 68rfe, 4dr, long bed 2wd, new to me now with 100K mi.
My previous trk was a 2004 5.9 with 48re, and 4:10 dif., 160k+ mi. Edge tuner run in mid position.
This 6.7 seems pretty strong to me. Recently from front position at signal light needed to be in a different lane to get on...