Posted by jerryinidaho [24.49.176.137] on Tuesday, December 02, 2014 at 19:02:02 :
Yes. I put the Dynatrac kit on shortly after I bought the truck. 1 1/2 to 3 mph improvement. At the price of diesel, I imagine they are paid off by now. Plus we were able to do a much better job of sealing all the parts when it went back together than they did on the assembly line.