Depends on the jeep. I have seen it work and not work. I'm right around 5.5"-6" and with a t case drop and shims, my knuckles are BARLEY missing. Also another bad thing about a t case drop is your losing that much clearance. I know it's not much but still. Also, with a lift over 3" even with a t case drop, your angles still are not what they should be. When you do a lift, you can do these minor things like shims and case drops but you are still going to wear out parts prematurely with those angles. Hack and tap FTW!