I talked to a shop today and they said that they didnt recommend any type of flip because the axle will tend to bounce around, how I'm not sure. He said it will flex great, but the driveablity will decrease. He said the only way he would do it is to put a panhard bar on. Any comments on this. I already have the flip waiting to install, but this just made me curious. I believe it is a good product just from all of the people who give it such great reviews, on and off road. And the fact that it will allow me to use a 4" spring instead of an 8". I just want to make sure it is the right thing to do. Next question. I am planning on an 8" BDS lift. 8" springs in front with ORD HD shackles and the 4" flip out back (greasable bolts/bushings throughout). My question is how accurate is the 4" flip? I mean is it a true 4"? I will also be getting the relocation block when it is available to move the axle back to its original location, so that would give me another 1" I assume. So thats 5" in back. The reason I am asking is because I dont know if I should get the 4" springs or the 5.5" springs so it sits level. So I need to know how true the 4" flip really is because I think I saw a post somewhere that said it was not a true 4". Any info anyone has is greatly appreciated!