i thought about getting these a long time ago, and chose to go with a longer spring and longer shackle, my biggest decision NOT to go with them was sidehills, they will tend to want to unload and also on decents they will want to open up, and also bumping up against something the back end will want to raise instead of going over the obstacle like it was intended to do. IF you get them, run a limiting strap from the diff to somewhere on the frame, so it won't have the tendency to "walk" out from under the vehicle, and can only goes as far as the strap. but i just feel there are better avenues to take that a psuedo solution to flex.

i think they cause more problems than they do solutions
on the flip side......
you are still running IFS, go with them, you only get so much flex as it is now, and this will help utilize the suspension you have now, i can pretty much gaurantee you wont have a problem with these(flipping/rolling) on your truck as it sits, mainly because of the limitation of the IFS, on a asidehill it will only allow so much body roll as compared to a rig with a SAS
why?
because you are going to have way more body roll with a flexy front AND rear suspension than just a flexy rear, it WILL roll more than it does now, but not enough to be too shady on a sidehill.
if you were to lift it (i.e. SAS, and beyond) then i would remove them as you'll be getting flex out of the front that you werent getting before.
hopefully my rambling helped some
