If you are running on a 208 transfer case, expect to need your drive shaft lenghtened.
I am running the echobit flip and a Azkicking zero rate + 1 ton CV drive shaft ( and a 10 bolt rear) /forums/images/graemlins/screwy.gif
(yeah I know everyone else runs a conversion u-joint with a half ton shaft and a 1 ton rear, but... I run it just the opposite!)
Anyways, Before the zero rate, I was getting horrible vibes- Even after dropping the transfer case, shimming the transfer case, shimming 4 different times, couldnt get it right- Had to get the CV.
I got the zero rate to move my axle back by 1.5" which worked out very well in terms of slip yolk amount as well as movement. Wish I got it with a 3 or 4 degree cut, but...
The ass sits a little high, but when you load it down with Fuel, water, supplies, and tools... it comes out about the same as my 4" front suspension.
Oh yeah, while your at it, toast out your old spring bushings.