:dontknow:.... iv'e been meaning to make a post about it to see what people thought would cause this but just hasn't had the time..... I will say that they were perfect before the first time i went to the track about a month ago....
probably just lost their arch, looks like you took a few of the leafs out? and for a daily/tow truck i'd get a 2003-2006 5.9 cummins with the 6speed, plenty comfy(for me anyway) and still pretty simple. also my bro-in-laws chipped 06 2WD 6speed gets 24mpg, and moms 06 4x4 auto gets like 19ish mpg