I just put in a TC and VB from BD and i think the difference is really good... seems that the rpm are down for the same speed by about 100 to 125 rpm so at 70 I am doing 1900 to 1875, when it used to be 2000rpm... miles have improved over my last trip to PDX with camper on, it looks good... not inexpensive, but I think it will be good overall, maybe a long buy back, but I LIKE IT!!! Getting a new front bumper in the morning from UTE all aluminum, should be cool! Then come some new driving lights while I wait for the new aftermarket headlight assembly for my 04.
Go for the BD stuff!