So the bds 4.5" lift is ready for install and I run into a snag reading that I need a center bearing drop kit becuase I have a crewmax.I was also told that I need to modify my driveshaft by two to three inches in lenght.I wish BDS would have specified this info upon check out they do for 2wd but nothing as far as 4wd.Anybody else run into this ?.Thank's